Green - Sarcasm Wiki

Contents

1. Overview
2. Etymology
3. Cultural Impact

Additive primary color visible between cyan and yellow

This article is about the color. For other uses, see Green (disambiguation) . For different varieties of the color and their names, see Shades of green .

Green

Clockwise, from top left: Spanish gold and emerald pendant; chestnut-fronted macaw ; Arnolfini Portrait by Jan van Eyck ; a billiards table; countryside in France ; a graduating class of U.S. Marines ; limes

Spectral coordinates Wavelength 495–570 nm Frequency ≈575–525 THz Color coordinates Hex triplet #00FF00 sRGB B (r , g , b ) (0, 255, 0) CMYK H (c , m , y , k ) (100, 0, 100, 0) HSV (h , s , v ) (120°, 100%, 100%) CIELCh uv (L , C , h ) (88, 136, 128°) Source X11 B : Normalized to [0–255] (byte) H : Normalized to [0–100] (hundred)

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Green is the color that resides between cyan and yellow on the visible spectrum . It is perceived when light possesses a dominant wavelength of approximately 495–570 nm . In subtractive color systems, prevalent in painting and color printing, green is achieved by blending yellow and cyan. Conversely, within the RGB color model , which governs televisions and computer displays, green stands as one of the additive primary colors , alongside red and blue. These primary colors are mixed in various proportions to generate the entire spectrum of colors. The most significant natural source of green is chlorophyll , the vital chemical compound that enables plants to perform photosynthesis , converting sunlight into chemical energy. Many organisms have evolved to adopt a green coloration, serving as camouflage within their verdant surroundings. Furthermore, numerous minerals exhibit a green hue, most famously the emerald , whose distinctive color is attributed to its chromium content.

During the post-classical and early modern periods in Europe, green was the color that signified wealth, commerce, and the burgeoning merchant and banking classes, distinguishing them from the nobility who exclusively wore red. This historical association persists in certain contexts; for instance, the benches in the British House of Commons , representing the commoners, are green, while those in the House of Lords , representing the aristocracy, are red. Green also holds a long-standing historical connection with Ireland and Gaelic culture . It is revered as the historic color of Islam , symbolizing the lush and abundant vegetation of Paradise . Historically, it was the color of the banner carried by Muhammad , and it continues to be prominently featured in the flags of nearly all Islamic nations.

Surveys conducted across American , European, and Islamic countries consistently reveal that green is the color most frequently linked with nature , life , health , youth , spring , hope , and envy . Interestingly, within the European Union and the United States , green can occasionally carry connotations of toxicity or poor health. However, in China and most of Asia, its associations are overwhelmingly positive, representing fertility and happiness. Its strong connection to nature has also made it the de facto color of the environmental movement . Political entities advocating for environmental protection and social justice often self-identify as part of the Green movement , frequently adopting the name “Green parties.” This has permeated advertising, with companies increasingly promoting green or environmentally friendly products. Green also traditionally signifies safety and permission, as exemplified by a green traffic light indicating it is safe to proceed, or a green card granting permanent residency in the United States.

Etymology and linguistic definitions

The word “green” shares its Germanic roots with words meaning “grass” and “grow.”

The word “green” originates from the Middle English and Old English word “grene.” Similar to the German word “grün,” it shares the same root as the words for “grass” and “grow.” This etymological lineage traces back to a Common Germanic root, *gronja-, which is also evident in Old Norse “grænn” and Old High German “gruoni” (though not attested in East Germanic ). Ultimately, it derives from a PIE root *ghre- meaning “to grow,” and is semantically related to “grass” and “to grow.” The earliest recorded instance of the word “green” being used as a color term in Old English dates back to approximately AD 700.

The Latin word “viridis” also provides a genuine and widely used term for “green.” This word is related to “virere” (“to grow”) and “ver” (“spring”), and it gave rise to terms in several Romance languages , such as French “vert” and Italian “verde” (and English words like “vert” and “verdure”). Similarly, the Slavic languages have the term “zelenъ.” Ancient Greek possessed a term for a yellowish, pale green – “chloros” (related to the color of chlorine), which is cognate with “khloeros” (“verdant”) and “khloē” ("chloe , the green of new growth").

Consequently, the aforementioned language families (Germanic, Romance, Slavic, Greek) all possess ancient terms for “green” that are derived from words signifying fresh, sprouting vegetation. However, comparative linguistics clearly indicates that these terms were independently coined over the past few millennia, and there is no identifiable single Proto-Indo-European origin or word for “green.” For instance, the Slavic “zelenъ” is cognate with Sanskrit “harithah” (meaning “yellow, ochre, golden”). The Turkic languages also feature the word “jašɨl,” meaning “green” or “yellowish green,” which can be compared to a Mongolian word for “meadow.”

Languages where green and blue are considered the same color

• Main article: Blue–green distinction in language

The concept of “green” in contemporary European languages typically encompasses wavelengths from approximately 520 to 570 nm. However, many historical and non-European languages categorize colors differently, sometimes using a single term for the range of approximately 450–530 nm (covering both blue and green) and another for approximately 530–590 nm (covering green and yellow).

In certain languages, including classical Chinese , Thai , archaic Japanese , and Vietnamese , the same word can denote either blue or green. The Chinese character 青 (pronounced “qīng” in Mandarin , “ao” in Japanese, and “thanh” in Sino-Vietnamese ) has a meaning that spans both blue and green; traditionally, blue and green are considered shades of “青.” More modern terms distinguish them as 藍 (lán in Mandarin) and 綠 (lǜ in Mandarin), respectively. Japanese also possesses two specific terms for green: 緑 (midori), derived from the classical Japanese descriptive verb “midoru” (meaning “to be in leaf, to flourish,” referring to trees), and グリーン (guriin), borrowed from the English word “green.” Nevertheless, in Japan, while traffic lights use the same colors as elsewhere, the green light is conventionally referred to using the same word as blue, “aoi,” because green is traditionally viewed as a shade of “aoi.” Similarly, green variants of certain fruits and vegetables, such as green apples or green shiso (as opposed to red apples and red shiso), will be described with the word “aoi.” Vietnamese employs a single word for both blue and green, “xanh,” with variations like “xanh da trời” (azure, literally “sky blue”), “lam” (blue), and “lục” (green; also “xanh lá cây,” literally “leaf green”).

The term “green” in modern European languages typically corresponds to wavelengths between 520 and 570 nm. However, numerous historical and non-European languages define this range differently, often employing a term for the blue-green spectrum (around 450–530 nm) and another for the green-yellow spectrum (around 530–590 nm). In the comparative study of color terms across global languages, “green” as a distinct category is found primarily in languages that possess a fully developed range of six basic colors (white, black, red, green, yellow, and blue), or less commonly in systems with five colors (white, red, yellow, green, and black/blue). These languages have introduced supplementary vocabulary for “green,” but these terms are often recognizable as recent borrowings that were not originally color descriptors, much like the English adjective “orange,” which was initially the name of a fruit. For example, the Thai word “kheīyw,” besides meaning “green,” also carries connotations of “rank” and “smelly,” along with other unpleasant associations.

The Celtic languages historically used a term for “blue/green/grey,” Proto-Celtic *glasto-, which gave rise to Old Irish “glas” (meaning “green, grey”) and Welsh “glas” (meaning “blue”). This word shares a cognate with the Ancient Greek “glaukos” (“bluish green”), contrasting with “khloros” (“yellowish green”) mentioned earlier.

A dark green rectangle

In contemporary Japanese, the term for green is 緑 (midori), while the older term for “blue/green,” 青 (ao), now specifically means “blue.” However, in certain contexts, green is still conventionally referred to as 青, as seen in “blue traffic light” (青信号, ao shingō) and “blue leaves” (青葉, aoba), reflecting the absence of a clear blue-green distinction in older Japanese. More accurately, traditional Japanese color terminology grouped certain shades of green with blue, and others with yellow tones.

In science

Colour

Frequency (THz )

Wavelength (nm )

violet 668–789 380–450

• blue 610–668 450–490

• cyan 575–610 490–520

• green 526–575 520–570

• yellow 508–526 570–590

• orange 484–508 590–620

• red 400–484 620–770

Color vision and colorimetry

In the field of optics, the perception of green is triggered by light that predominantly features energy within the wavelength range of approximately 495–570 nm . The dark-adapted human eye exhibits its highest sensitivity at around 507 nm, a blue-green color, while the light-adapted eye is most sensitive at approximately 555 nm, a yellow-green. These points correspond to the peak sensitivities of the rod (scotopic) and cone (photopic) luminosity functions , respectively.

The sensation of greenness, which operates in opposition to redness as one of the opponent color mechanisms in human color vision , is evoked by light that stimulates the medium-wavelength M cone cells in the eye more strongly than the long-wavelength L cones. Light that elicits this greenness response more prominently than the yellowness or blueness associated with the other opponent color mechanism is termed green. A typical green light source displays a spectral power distribution where energy is primarily concentrated within the wavelength range of roughly 487–570 nm.

Red, green, and blue are additive colors . All perceived colors are formed by mixing these in varying intensities.

Human eyes possess color receptors known as cone cells, with three distinct types. In certain individuals, one type may be missing or faulty, leading to color blindness , including the common inability to differentiate between red and yellow from green, a condition known as deuteranopia or red-green color blindness. Green is perceived as a restful color for the eyes. Studies have indicated that exposure to a green environment can alleviate fatigue.

Within the subtractive color system, employed in painting and printing, green is produced by combining yellow and blue, or yellow and cyan . In the RGB color model , utilized in televisions and computer screens, green serves as one of the additive primary colors , alongside red and blue. These primaries are mixed in diverse combinations to generate all other colors. On the HSV color wheel , also referred to as the RGB color wheel , the complementary color to green is magenta ; this consists of an equal mixture of red and blue light, representing one of the purples. In a traditional color wheel based on subtractive color mixing, red is considered the complementary color to green.

In additive color devices such as computer displays and televisions, one of the primary light sources is typically a narrow-spectrum yellowish-green with a dominant wavelength of approximately 550 nm. This “green” primary is combined with an orangish-red “red” primary and a purplish-blue “blue” primary to produce colors within the gamut of the RGB color model. A unique green (a green that appears neither yellowish nor bluish) is generated on such a device by mixing light from the green primary with a portion of light from the blue primary.

Lasers

Three green lasers are shown firing at a single point in the sky from the Starfire Optical Range .

Lasers emitting in the green portion of the spectrum are readily accessible to the general public in a wide array of output powers. Green laser pointers operating at 532 nm (563.5 THz) are relatively affordable compared to other wavelengths of equivalent power and are highly popular due to their excellent beam quality and remarkably high apparent brightness. The most common type of green lasers utilize diode-pumped solid-state (DPSS) technology to produce the green light.

An infrared laser diode operating at 808 nm is employed to energize a crystal of neodymium-doped yttrium vanadium oxide (Nd:YVO4) or neodymium-doped yttrium aluminum garnet (Nd:YAG), inducing it to emit light at 1064 nm (281.76 THz). This deeper infrared light is then passed through another crystal containing potassium, titanium, and phosphorus (KTP). The nonlinear optical properties of the KTP crystal generate light at a frequency double that of the incident beam (563.5 THz), corresponding to a wavelength of 532 nm, which is perceived as green. Additional green wavelengths are available through DPSS technology, ranging from 501 nm to 543 nm. Green wavelengths can also be produced by gas lasers , including the helium–neon laser (543 nm), the Argon-ion laser (514 nm), and the Krypton-ion laser (521 nm and 531 nm), as well as liquid dye lasers . Green lasers find diverse applications, encompassing pointing, illumination, surgical procedures, laser light shows , spectroscopy , interferometry , fluorescence , holography , machine vision , non-lethal weapons , and bird control .

As of mid-2011, direct green laser diodes operating at 510 nm and 500 nm have become generally available, although their price point remains relatively high for widespread public adoption. The efficiency of these diode lasers (peak 3%) compared to that of DPSS green lasers (peak 35%) might also contribute to their limited use in niche applications.

Pigments, food coloring, and fireworks

• See also: Green pigments

The Chicago River is dyed green annually to commemorate St. Patrick’s Day .

Numerous minerals serve as sources for pigments that have been utilized in green paints and dyes throughout history. In this context, pigments are minerals that reflect green light rather than emitting it through luminescent or phosphorescent properties. The vast number of green pigments makes an exhaustive enumeration impractical. Among the more notable green minerals, however, is the emerald , whose green coloration is derived from trace amounts of chromium and occasionally [vanadium].

Chromium(III) oxide (Cr₂O₃) is known as chrome green and is also referred to as viridian or institutional green when employed as a pigment. For many years, the origin of amazonite ’s color remained a mystery. While it was widely believed to be due to copper , as copper compounds often exhibit blue and green colors, the actual blue-green hue is likely caused by small quantities of lead and water within the feldspar .

Copper is the source of the green color found in malachite pigments, which are chemically basic copper(II) carbonate .

Verdigris is produced by immersing a plate or blade of copper, brass, or bronze, slightly warmed, in a vat of fermenting wine for several weeks. Subsequently, the green powder that forms on the metal is scraped off and dried. The process of creating verdigris was documented in antiquity by Pliny . It was used by the Romans in the murals of Pompeii and in Celtic medieval manuscripts as early as the 5th century AD. Verdigris produced a distinctive blue-green hue that was unparalleled by other pigments, but it had significant drawbacks: it was unstable, susceptible to moisture, difficult to mix with other colors, could degrade adjacent colors, and was toxic . Leonardo da Vinci , in his treatise on painting, explicitly warned artists against its use. Despite these issues, it was widely employed in miniature paintings across Europe and Persia during the 16th and 17th centuries. Its usage largely declined by the late 19th century, having been supplanted by the safer and more stable chrome green . Viridian, as previously mentioned, was patented in 1859 and gained popularity among painters due to its stability and non-toxic nature, unlike other synthetic greens. Vincent van Gogh utilized it, in conjunction with Prussian blue , to achieve the greenish tint in the dark blue sky of his painting Café Terrace at Night .

Green earth is a natural pigment that has been in use since the era of the Roman Empire . It is composed of clay colored by iron oxide , magnesium , aluminum silicate , or potassium . Significant deposits were discovered in southern France near Nice , and in Italy around Verona , on Cyprus , and in Bohemia . The clay was crushed, washed to remove impurities, and then powdered. It was sometimes referred to as Green of Verona.

Mixtures of oxidized cobalt and zinc were also employed to create green paints as early as the 18th century.

Cobalt green , occasionally known as Rinman’s green or zinc green, is a translucent green pigment created by heating a combination of cobalt(II) oxide and zinc oxide. Sven Rinman , a Swedish chemist, discovered this compound in 1780. Green chrome oxide was a novel synthetic green developed by a Parisian chemist named Pannetier around 1835. Emerald green, a synthetic deep green, was produced in the 19th century through the hydration of chrome oxide and was also known as Guignet green.

Fireworks commonly utilize barium salts to produce green sparks.

There are no naturally occurring green food colorings that have received approval from the U.S. Food and Drug Administration . Chlorophyll, designated by the E numbers E140 and E141, is the most prevalent green chemical found in nature, and its use is restricted to certain medicines and cosmetic materials. Quinoline Yellow (E104), a frequently used coloring in the United Kingdom, is prohibited in Australia, Japan, Norway, and the United States. Green S (E142) is banned in many countries due to its association with hyperactivity, asthma , urticaria , and insomnia .

To generate green sparks in fireworks , barium salts are employed, such as barium chlorate , barium nitrate crystals, or barium chloride , which are also used to create green flames in fireplace logs. Copper salts typically produce blue flames, but cupric chloride (also known as “campfire blue”) can also yield green flames. Green pyrotechnic flares may incorporate a mixture ratio of 75:25 of boron and potassium nitrate . Smoke can be rendered green through a mixture of solvent yellow 33, solvent green 3, lactose , magnesium carbonate , and sodium carbonate added to potassium chlorate .

Biology

• The chloroplasts within plant cells contain a high concentration of chlorophyll , giving them their green appearance.

• Frogs often exhibit a green coloration because dermal iridophores reflect blue light through a yellow upper layer, filtering the light to be predominantly green.

• A yellow-naped Amazon parrot , colored green for camouflage within its jungle habitat.

• An Anole combines the blue structural color of iridiophores with a layered deposit of yellow carotenoid pigments , obtained from its diet, to produce the green color utilized for camouflage .

• The green huntsman spider derives its green color from the presence of bilin pigments in the spider’s hemolymph and tissue fluids .

Green is a pervasive color in nature, largely due to the presence of chlorophyll in plants, a complex chemical essential for photosynthesis . Chlorophyll efficiently absorbs longer wavelengths of light (red) and shorter wavelengths (blue) but is less effective at absorbing wavelengths that appear green to the human eye. Consequently, the light reflected by plants is enriched in green wavelengths. Chlorophyll’s poor absorption of green light is thought to have evolved in organisms inhabiting oceans where photosynthetic bacteria, like halobacteria , were already utilizing this portion of the spectrum via bacteriorhodopsin. Subsequent organisms were selected to exploit the spectral regions not already in use.

A green mamba at the Hellabrunn Zoo .

Animals frequently employ the color green for camouflage , allowing them to blend seamlessly with the chlorophyll-rich green of their environment. Most fish, reptiles, amphibians, and birds appear green due to the reflection of blue light through an overlying layer of yellow pigment. The perception of color can also be influenced by the surrounding environment; for instance, broadleaf forests often cast a yellow-green light as the trees filter sunlight. Turacoverdin is one chemical pigment responsible for imparting a green hue to certain birds. Invertebrates, such as insects and mollusks, often display green colors due to porphyrin pigments, sometimes derived from their diet, which can also affect the color of their feces. Other chemical compounds contributing to green coloration in organisms include flavins (lychochromes) and hemanovadin. Humans have mimicked this natural camouflage by wearing green clothing in military and other contexts. Substances that can impart a greenish tint to human skin include biliverdin , the green pigment found in bile , and ceruloplasmin , a protein that transports copper ions in chelation .

The green huntsman spider exhibits its green coloration owing to the presence of bilin pigments within the spider’s hemolymph (circulatory fluid) and tissue fluids . This spider hunts insects within green vegetation, where its coloration provides effective camouflage.

Green eyes

• Main article: Eye color § Green

There is no actual green pigment in green eyes. Similar to the coloration of blue eyes, it is an optical phenomenon. Its appearance results from the interplay between an amber or light brown pigmentation in the stroma , characterized by a low to moderate concentration of melanin , and the blue tone imparted by the Rayleigh scattering of reflected light.

Individuals are not born with green eyes. Infants are typically born with one of two eye colors: dark or blue. Following birth, specialized cells called melanocytes begin to release melanin, the brown pigment, into the infant’s irises. This process is initiated as melanocytes respond to light over time. Green eyes are most prevalent in Northern and Central Europe . They can also be found in Southern Europe , West Asia , Central Asia , and South Asia . In Iceland , a significant majority, 89% of women and 87% of men, possess either blue or green eye color. A study conducted on Icelandic and Dutch adults indicated that green eyes are considerably more common in women than in men.

In history and art

Prehistoric history

Neolithic cave paintings do not display evidence of green pigments. However, Neolithic peoples in northern Europe did produce a green dye from birch leaves for their clothing. This dye was of poor quality, tending more towards brown than green. Ceramics from ancient Mesopotamia depict individuals wearing vibrant green garments, though the methods used to achieve these colors are not definitively known.

Ancient history

• The gardens of ancient Egypt symbolized rebirth. This tomb painting depicts the gardens of Amon at the temple of Karnak, from the tomb of Nakh, the chief gardener, dating to the early 14th century BC.

• The Ancient Egyptian god Osiris , ruler of the underworld and associated with rebirth and regeneration, was typically depicted with a green face. (Tomb of Nefertari , 1295–1253 BC).

• Ancient Roman fresco depicting Flora, or Spring, from Stabiae (2nd century AD).

• Gorgan ceramic, Early 13th century.

In Ancient Egypt , green was a powerful symbol of regeneration and rebirth, representing the fertility brought by the annual Nile flood. For their tomb paintings and papyrus illustrations, Egyptian artists utilized finely ground malachite , mined from the western Sinai and eastern desert regions; a paintbox containing malachite pigment was discovered within the tomb of King Tutankhamun . They also employed the less costly green earth pigment or achieved green by mixing yellow ochre with blue azurite . To dye fabrics green, they first treated them with a yellow dye derived from saffron and then immersed them in a blue dye obtained from the roots of the woad plant.

For the ancient Egyptians, green carried profoundly positive associations. The hieroglyph representing green depicted a sprouting papyrus shoot, underscoring the intrinsic connection between green, vegetation, vitality, and growth. In wall paintings, Osiris , the god of the underworld, was consistently portrayed with a green face, symbolizing good health and rebirth. Palettes of green facial makeup, crafted from malachite, have been unearthed in tombs. This makeup was applied by both the living and the deceased, particularly around the eyes, as a protective measure against evil. Tombs also frequently contained small amulets shaped like scarab beetles made of malachite, intended to safeguard and invigorate the deceased. Green also symbolized the sea, which they referred to as the “Very Green.”

In Ancient Greece, the distinction between green and blue was sometimes blurred, with a single word occasionally describing both the color of the sea and the color of trees. The philosopher Democritus identified two distinct greens: “chloron,” or pale green, and “prasinon,” or leek green. Aristotle posited that green occupied a position midway between black, symbolizing earth, and white, symbolizing water. Despite these observations, green was not considered one of the four primary colors of Greek painting—red, yellow, black, and white—and is rarely encountered in Greek art.

The Romans, however, demonstrated a greater appreciation for the color green; it was associated with Venus , the goddess of gardens, vegetables, and vineyards. The Romans produced a refined green earth pigment that found extensive use in the wall paintings of Pompeii , Herculaneum , Lyon , Vaison-la-Romaine , and other Roman cities. They also utilized the pigment verdigris, created by steeping copper plates in fermenting wine. By the second century AD, the Romans were incorporating green into paintings, mosaics, and glass, and possessed ten different Latin terms to describe varieties of green.

Postclassical history

• In the Arnolfini Portrait by Jan van Eyck (1434), the opulent green fabric of the depicted dress signifies the wealth and social standing of the family.

• Duccio di Buoninsegna applied an undercoat of green earth pigment to the faces in this painting (1308–1311). The subsequent fading of the surface pink layer has resulted in the faces appearing green today.

• The green attire worn by the subject in the Mona Lisa indicates her status as a member of the gentry, rather than nobility.

• In the 15th-century painting Saint Wolfgang and the Devil _and_the_Devil by Michael Pacher , the Devil is depicted in green. Poets such as Chaucer also drew associations between the color green and the devil.

• In this 1503 painting by Perugino , malachite pigment was used for the vibrant green garments of the worshippers, while the background greens were rendered using green earth pigments.

During the Middle Ages and Renaissance, the color of clothing served as an indicator of social rank and profession. Red was exclusively reserved for the nobility, while brown and gray were worn by peasants. Green, on the other hand, was the color of choice for merchants, bankers, and the gentry and their families. The Mona Lisa is depicted in green in her portrait, as is the bride in the Arnolfini Portrait by Jan van Eyck .

For those who desired or were obligated to wear green, there was a scarcity of effective vegetable-based green dyes that could withstand washing and sunlight. Green dyes were derived from various sources, including fern , plantain , buckthorn berries, the juice of nettles and leeks , the digitalis plant, the broom plant, the leaves of the fraxinus (ash tree), and the bark of the alder tree. However, these dyes were prone to rapid fading or color alteration. It wasn’t until the 16th century that a durable green dye was successfully produced, achieved by first dyeing the fabric blue with woad and then yellow with Reseda luteola , also known as yellow-weed.

The range of pigments available to painters was more extensive. Monks in monasteries utilized verdigris, created by soaking copper in fermenting wine, for coloring medieval manuscripts. They also employed finely ground malachite, which yielded a luminous green. Green earth colors were commonly used for backgrounds.

In the early Renaissance, painters like Duccio di Buoninsegna developed a technique of applying a green undercoat to faces before adding pink tones, resulting in a more lifelike appearance. Over centuries, the pink layers have faded, causing some of these faces to appear green today.

Modern history

In the 18th and 19th centuries

• Dedham Vale (1802) by John Constable . Constable’s paintings romanticized the vibrant green landscapes of England.

• In the painting by Jean-Baptiste Debret (1822), Emperor Pedro I of Brazil is depicted wearing the imperial mantle, which is coated with green fabric.

• In the works of Jean-Baptiste-Camille Corot (1796–1875), the green of trees and nature became the central focus of the paintings, with human figures relegated to secondary importance.

• Spring, by Marie Bashkirtseff , 1884.

• The Night Café , (1888), by Vincent van Gogh , employed red and green to convey what Van Gogh described as “the terrible human passions.”

• Émile Bernard – Still Life with Green Teapot, Cup, and Fruit, 1890.

• Louis Anquetin – Woman at the Champs-Élysées by Night.

The 18th and 19th centuries witnessed the discovery and development of synthetic green pigments and dyes, which progressively superseded earlier mineral and vegetable-based colorants. These new synthetic dyes offered greater stability and brilliance compared to their vegetable counterparts, although some contained high concentrations of arsenic and were eventually prohibited.

During the 18th and 19th centuries, green became strongly associated with the romantic movement in literature and art. The German poet and philosopher Goethe proclaimed green to be the most restful color, ideally suited for bedroom decor. Artists such as John Constable and Jean-Baptiste-Camille Corot captured the lush verdancy of rural landscapes and forests in their work. Green was often contrasted with the muted grays and blacks that symbolized the burgeoning Industrial Revolution.

The latter half of the 19th century saw green being employed in art not merely for naturalistic representation, but to evoke specific emotional states. James McNeill Whistler , an American artist, was among the first to elevate color as the paramount element in his compositions. He created a series of works he termed “symphonies” or “nocturnes” of color, including Symphony in Gray and Green: The Ocean (1866–1872).

The late 19th century also marked the commencement of systematic studies into color theory, with a particular focus on how complementary colors, such as red and green, intensify each other when placed in proximity. These findings profoundly influenced artists like Vincent van Gogh . In a letter to his brother Theo in 1888, Van Gogh described his painting The Night Cafe: “I sought to express with red and green the terrible human passions. The hall is blood red and pale yellow, with a green billiard table in the center, and four lamps of lemon yellow, with rays of orange and green. Everywhere it is a battle and antithesis of the most different reds and greens.”

In the 20th and 21st centuries

In the 1980s, green emerged as a significant political symbol, becoming the color of the Green Party in Germany and similar parties across Europe. It represented the environmental movement and also signaled a new political left that diverged from traditional socialist and communist ideologies. (See § In politics section below.)

Symbolism and associations

Safety and permission

A green light universally signifies permission to proceed.

Green conveys a sense of safety and permission to proceed, as seen in traffic lights . The standardization of red and green as colors for international railroad signals occurred in the 19th century. The inaugural traffic light, utilizing red and green gas lamps, was installed in 1868 in front of the Houses of Parliament in London; it exploded the following year, injuring the policeman operating it. In 1912, the first modern electric traffic lights were introduced in Salt Lake City , Utah . Red was chosen primarily for its high visibility and association with danger, while green was selected because it was distinctly different from red. Today, green lights consistently indicate that a system is active and functioning correctly. In many video games, green signifies both health and the completion of objectives, serving as the opposite of red.

Nature, vivacity, and life

In Europe and the United States, green is the color most commonly associated with nature, vitality, and life. It is the adopted color of numerous environmental organizations, such as Greenpeace , and the Green Parties throughout Europe. Many cities designate specific areas as green spaces, utilizing green bins and containers for waste disposal. A green cross is widely recognized as a symbol for pharmacies in Europe.

In China, green is linked to the east, the sunrise, and the concepts of life and growth. In Thailand, green is considered an auspicious color for individuals born on a Wednesday, with light green being particularly favored for those born at night.

Springtime, freshness, and hope

Green is the color most frequently associated with springtime, freshness, and hope in the United States and Europe. It is often employed to symbolize rebirth, renewal, and immortality. In Ancient Egypt , the god Osiris , king of the underworld, was depicted with green skin, reflecting green’s association with regeneration. The connection of green as a color of hope is tied to its association with springtime; hope embodies the belief in improvement following adversity, akin to the renewal of flora after the winter season.

Youth and inexperience

Green is commonly associated with youth in Europe and the United States. It is also frequently used to describe individuals who are young and inexperienced, likely drawing an analogy to immature or unripe fruit. Examples include “green cheese,” referring to a fresh, unaged cheese, and “greenhorn,” denoting an inexperienced person.

Food and diet

Indian FSSAI labels. The green dot symbol (top-left) indicates lacto-vegetarian food.

The color green has seen increasing use by food companies, governments, and practitioners to signify vegan and vegetarian products. The Indian government mandates that vegetarian food be marked with a green circle as part of the Food Safety and Standards Act of 2006 (with subsequent modifications to the symbolism, while retaining the color green). In 2021, India introduced a green “V” to exclusively label vegan options. In Western countries, the [V-Label], a green V designed by the European Vegetarian Union , is used by food distributors to identify vegan and vegetarian products.

Calm, tolerance, and the agreeable

Surveys also indicate that green is the color most strongly associated with calmness, agreeableness, and tolerance. Red is linked to heat, blue to cold, and green to a pleasant temperature. Red is associated with dryness, blue with wetness, and green, occupying a middle ground, with dampness. Red is considered the most active color, blue the most passive; green, situated between them, represents neutrality and calm, which is why it is sometimes utilized in architecture and design. Blue and green together symbolize harmony and balance. Experimental studies further support this calming effect, demonstrating a statistically significant decrease in negative emotions and an increase in creative performance.

Jealousy and envy

Green is frequently associated with jealousy and envy . The phrase “green-eyed monster” was famously coined by William Shakespeare in his play Othello: “it is the green-eyed monster which doth mock the meat it feeds on.” Shakespeare also employed the phrase “green-eyed jealousy” in The Merchant of Venice.

Love and sexuality

In contemporary Europe and the United States, green is not commonly associated with love and sexuality. However, during the medieval period , it sometimes symbolized love and the base, natural desires of humanity. It was the color of the serpent in the Garden of Eden responsible for the downfall of Adam and Eve . Conversely, for the troubadours , green represented growing love, and light green attire was reserved for young, unmarried women.

In Persian and Sudanese poetry, dark-skinned women were referred to as “green” women and were considered erotic. The Chinese term for cuckold translates to “wearing a green hat.” This custom likely originated from the ancient Chinese practice where prostitutes were referred to as “the family of the green lantern,” and the family members of a prostitute would wear a green headscarf.

In Victorian England , green became associated with homosexuality . Oscar Wilde popularized the green carnation as a symbol of homosexuality, and gay men would wear one to subtly signify their sexuality.

Dragons, fairies, monsters, and devils

• Saint Wolfgang and the Devil, by Michael Pacher .

• A medieval illustration of a dragon (1460).

• A Chinese dragon dance .

• A 20th-century depiction of a leprechaun .

In folklore, legends, and popular culture, fairies , dragons , monsters , and the devil are often portrayed in green.

During the Middle Ages, the devil was typically depicted as either red, black, or green. Dragons were commonly depicted as green, attributed to their reptilian features such as heads, claws, and tails.

Modern Chinese dragons are frequently green, but unlike their European counterparts, they are considered benevolent. Chinese dragons traditionally symbolize potent and auspicious powers, particularly control over elements like water, rainfall, hurricanes, and floods. The dragon also represents power, strength, and good fortune. The Emperor of China often used the dragon as an emblem of his imperial authority and might. The dragon dance is a popular performance during Chinese festivals.

In Irish and English folklore , green was sometimes associated with witchcraft and with faeries and spirits. The leprechaun , a type of Irish fairy, is commonly depicted wearing a green suit, although prior to the 20th century, this figure was more often described as wearing red.

In theater and film, green was frequently linked to monsters and the inhuman. While the earliest Frankenstein films were in black and white, the poster for the 1935 version, The Bride of Frankenstein , depicted the monster with a green face. Actor Bela Lugosi wore green-tinted makeup for his portrayal of Dracula in the 1927–1928 Broadway stage production.

Poison and sickness

Like other common colors, green possesses contradictory associations. While it is the color most linked with good health in Europe and America, it is also frequently associated with toxicity and poison. This association has a historical basis, as several popular paints and pigments in the nineteenth century, notably verdigris, Schweinfurt green, and Paris green, were highly toxic due to their copper or arsenic content. The intoxicating beverage absinthe was colloquially known as “the green fairy.”

A greenish tinge to the skin is sometimes indicative of nausea and sickness. The expression “green at the gills” describes someone who appears physically ill. When combined with gold, green can sometimes symbolize the fading of youth. In certain East Asian cultures, green is used as a symbol of sickness or nausea.

Social status, prosperity, and the dollar

• The green benches in the House of Commons of the United Kingdom .

• The reverse side of the United States one-dollar bill has been green since 1861, giving it the popular name “greenback.”

In Europe and the United States, green is sometimes associated with social standing and prosperity. From the Middle Ages through the 19th century, it was often worn by bankers, merchants, country gentlemen, and others who possessed wealth but were not part of the nobility. The benches in the House of Commons of the United Kingdom , where members of the landed gentry sat, are colored green.

In the United States, green became inextricably linked with the dollar bill. Since 1861, the reverse of the dollar bill has been green. Green was initially chosen because it was believed to deter counterfeiters who attempted to duplicate banknotes using early photographic equipment. Furthermore, because the banknotes were thin, the green ink on the back did not bleed through and obscure the images on the front. Green continues to be used today because the public has come to associate it with a strong and stable currency.

One of the most notable interpretations of this symbolism is found in The Wonderful Wizard of Oz . The Emerald City in the story is depicted as a place where all inhabitants wear tinted glasses that make everything appear green. According to a populist interpretation of the narrative, the city’s color is employed by the author, L. Frank Baum , to allegorically represent the American financial system of his time, a period when the nation was debating the merits of paper money versus a gold standard.

On flags

• See also: Green flag

• The flag of Italy (1797) was designed in emulation of the French flag. It originated as the flag of the Cisalpine Republic , with the green element derived from the uniforms of the Milanese army.

• The flag of Brazil (1889). The green color was inherited from the flag of the Empire of Brazil , where it represented the color of the House of Braganza .

• The flag of Lithuania (1918). The green symbolizes the beauty of nature, freedom, and hope.

• The flag of Ireland (1919). The green represents the culture and traditions of Gaelic Ireland .

• The Flag of Saudi Arabia (1932) features the green color of Islam . The Arabic inscription translates to: “There is no God but Allah, and Muhammad is his Prophet.”

• The flag of India (1947). The green color has been interpreted at various times to represent hope or prosperity.

• The flag of Pakistan (1947). The green portion signifies the Muslim majority population of the country.

• The flag of Bangladesh (1971). The green field symbolizes the lushness of the land of Bangladesh .

• The flag of Nigeria (1960). The green represents the forests and natural wealth of the country.

• The flag of Jamaica (1962). The green symbolizes the country’s lush vegetation and also represents hope.

• The flag of South Africa (1994) incorporates green, yellow, and black, the colors of the African National Congress .

• The former flag of Libya (1977–2011) was unique as the world’s only national flag composed of a single color with no design or details.

• The flag of Italy (1797) was designed in the style of the French tricolor and originally served as the flag of the Cisalpine Republic, with its capital in Milan . The red and white elements represented Milan, while green was adopted from the military uniforms of the Cisalpine Republic’s army. Alternative interpretations suggest it symbolizes the Italian landscape or represents hope.

• The flag of Brazil features a green field, an adaptation from the flag of the Empire of Brazil, where green symbolized the royal family.

• The flag of India was inspired by an earlier flag of the independence movement led by Gandhi , which had a red band representing Hinduism and a green band symbolizing Islam, the second largest religion in India.

• The flag of Pakistan symbolizes the nation’s commitment to Islam and the equal rights of religious minorities. The predominant portion (in a 3:2 ratio) of the flag is dark green, representing the Muslim majority (approximately 98% of the total population), while a white vertical bar (in a 3:1 ratio) at the mast signifies the equal rights afforded to religious minorities and minority religions within the country. The crescent and star emblems symbolize progress and a bright future, respectively.

• The flag of Bangladesh consists of a green field with a red disc, based on a similar flag used during the Bangladesh Liberation War of 1971. The red disc symbolizes the sun rising over Bengal and also represents the blood shed for Bangladesh’s independence. The green field signifies the abundant vegetation of Bangladesh.

• The flag of the international constructed language Esperanto features a green field and a green star within a white area. The green represents hope (as “esperanto” translates to “one who hopes”), the white signifies peace and neutrality, and the star symbolizes the five inhabited continents.

Green is one of the three colors (along with red and black, or red and gold) associated with Pan-Africanism . Consequently, several African nations incorporate green into their flags, including Nigeria , South Africa , Ghana , Senegal , Mali , Ethiopia , Togo , Guinea , Benin , and Zimbabwe . The Pan-African colors are derived from the Ethiopian flag , one of the oldest independent nations in Africa. On some African flags, green symbolizes the natural richness of the continent.

Many flags within the Islamic world feature green, as this color holds sacred significance in Islam (see below). The flag of Hamas , as well as the flag of Iran , is green, symbolizing their Islamist ideology. The 1977 flag of Libya comprised a simple green field without any other design elements, making it the sole national flag in the world consisting of a single color. Some countries utilize green in their flags to represent their nation’s abundant vegetation, as seen in the flag of Jamaica , or to symbolize hope for the future, as in the flags of Portugal and Nigeria. The green cedar tree depicted on the Flag of Lebanon officially represents steadfastness and tolerance.

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English Wikisource contains original text related to this article: The Wearing of the Green.

Green is a prominent symbol of Ireland, often referred to as the “Emerald Isle.” The color is particularly identified with the republican and nationalist traditions in modern times. This symbolism is reflected in the flag of the Republic of Ireland , where green is balanced with white and the Protestant orange. Green plays a significant role in the Irish holiday of St. Patrick’s Day .

In politics

• See also: Green politics

• The green harp flag served as the banner of Irish nationalism from the 17th century until the early 20th century.

• The emblem of the Australian Greens . This party secured 12.7% of the primary vote in the 2022 Australian federal election for the Australian Senate.

• A demonstration organized by Les Verts , the Green party of France, in Lyon.

• The Rainbow Warrior , the ship of the Greenpeace environmental movement.

• The logo of the Crescent Star Party incorporates the star and crescent symbol against a green background.

The earliest recorded “Green Party” emerged as a political faction in Constantinople during the 6th-century Byzantine Empire . This faction derived its name from a popular chariot racing team and was a staunch adversary of the “Blue faction,” which supported Emperor Justinian I and also had its own chariot racing team. In 532 AD, riots erupted between these factions following a race, escalating into the Nika Riots, which resulted in the massacre of Green supporters and the widespread destruction of Constantinople’s city center.

Green has historically been the color of Irish nationalism since the 17th century. The green harp flag, featuring a traditional Gaelic harp , became the emblem of this movement. It served as the banner for the Society of United Irishmen , which spearheaded the ultimately unsuccessful Irish Rebellion of 1798 . Upon Ireland’s achievement of independence in 1922, green was incorporated into the national flag .

In the 1970s, green became the color of the third-largest political party in the Swiss Federal Council, the Swiss People’s Party (SVP). This party’s ideology is rooted in Swiss nationalism, national conservatism, right-wing populism, economic liberalism, agrarianism, isolationism, and Euroscepticism. The SVP was founded on September 22, 1971, and currently boasts 90,000 members.

During the 1980s, green emerged as the symbolic color for a new wave of European political parties focused on environmentalism . Green was chosen for its inherent associations with nature, health, and growth. The most prominent green party in Europe is Alliance ‘90/The Greens (German: Bündnis 90/Die Grünen) in Germany, formed in 1993 through the merger of the German Green Party (established in West Germany in 1980) and Alliance 90 (formed during the East German Revolution of 1989–1990). In the 2009 federal elections, the party garnered 11% of the vote, securing 68 out of 622 seats in the Bundestag .

Green parties in Europe generally advocate for policies centered on ecology , grassroots democracy , nonviolence , and social justice . Green parties are active in over one hundred countries and are largely affiliated with the Global Green Network .

Greenpeace is a non-governmental environmental organization that originated from the anti-nuclear and peace movements of the 1970s. Its vessel, the Rainbow Warrior , frequently engaged in actions to disrupt nuclear testing and whaling operations. The organization currently maintains branches in forty countries.

The Australian Greens were established in 1992. In the 2010 federal election, the party achieved a significant milestone by receiving 13% of the vote (over 1.6 million votes) in the Senate election, a first for any Australian minor party.

Green is the color associated with the Puerto Rican Independence Party , the smallest of Puerto Rico’s three major political parties, which advocates for the island’s independence from the United States.

In Indonesia , green is utilized by several Islamist political parties, including the National Awakening Party, Crescent Star Party , United Development Party , and the local Aceh Just and Prosperous Party.

In Taiwan , green is the color of the Democratic Progressive Party . In Taiwan, green is associated with the Taiwan independence movement .

In religion

• See also: Green in Islam

Green is the traditional color of Islam. According to Islamic tradition, the robe and banner of Muhammad were green. Furthermore, the Koran (XVIII, 31 and LXXVI, 21) describes the fortunate inhabitants of paradise as wearing green silk robes. A hadith quotes Muhammad as stating that “water, greenery, and a beautiful face” are three universally good things. Consequently, green was adopted as a Shi’a color.

Al-Khidr (“The Green One”) was a significant Qur’anic figure said to have met and journeyed with Moses . He was given this name due to his role as a diplomat and negotiator. Green was also considered to be the median color between light and obscurity.

In Christianity , particularly within Roman Catholic and more traditional Protestant denominations, priests wear green vestments during liturgical celebrations in Ordinary Time . In the Eastern Catholic Church , green is the color associated with Pentecost . Green is also one of the Christmas colors, possibly originating from pre-Christian traditions where evergreens were revered for their ability to retain their color throughout winter. The Romans incorporated green holly and evergreens as decorations for their winter solstice celebration, Saturnalia, which eventually evolved into the Christmas celebration. Particularly in Ireland and Scotland , green is used to represent Catholics, while orange represents Protestantism . This symbolism is evident in the national flag of Ireland.

In Paganism , green symbolizes abundance, growth, wealth, renewal, and balance. In magical practices, green is often employed to attract money and luck. The Green Man is a figure that shares parallels with various deities.

In gambling and sports

• A green belt in judo .

• A baccarat table and cards on a casino gambling table.

• A 1929 Bentley colored British racing green .

• A billiards table, colored green after the lawns where the game’s ancestors were originally played.

• Gambling tables in casinos are traditionally green. This tradition is said to have originated in gambling rooms in Venice during the 16th century.

• Billiards tables are traditionally covered with green woolen cloth. The earliest indoor tables, dating back to the 15th century, were colored green to emulate the grass courts used for similar lawn games of that era.

• Green was the traditional color worn by hunters in the 19th century, particularly the shade known as hunter green . In the 20th century, most hunters began wearing olive drab , a shade of green, instead of hunter green.

• Green is a common color for sports teams. Notable teams include A.S. Saint-Étienne of France, known as Les Verts (The Greens). The Green Bay Packers , an American football team, features the color in its official name and wears green uniforms. The NBA basketball team Boston Celtics is recognized for its green and white colors. In Israel , green and white are identified with Maccabi Haifa F.C. , a successful football club known as “The Greens.” Several national soccer teams incorporate green, usually reflecting the colors of their national flags.

• British racing green was the international motor racing color of Britain from the early 1900s until the 1960s, when it was replaced by the colors associated with sponsoring automobile companies.

• A green belt in karate , taekwondo , and judo signifies a level of proficiency in the sport.

Idioms and expressions

• Having a green thumb (American English) or green fingers (British English): Signifies a talent for or deep interest in gardening. This expression gained popularity beginning in 1925 through a BBC gardening program.

• Greenhorn: Refers to someone who is inexperienced.

• Green-eyed monster: A metaphorical reference to jealousy. (See section above on jealousy and envy.)

• Greenmail: A financial and corporate takeover term describing a company’s practice of paying a premium to repurchase its own shares to prevent an unwelcome takeover. Originating on Wall Street in the 1980s, the term derives from the green color of dollars.

• Green room: A backstage room in a theater where actors rest when not performing, or a waiting area in a television studio for guests before appearing on camera. Its origin dates to the late 17th century, stemming from a room of that color at the Theatre Royal, Drury Lane in London.

• Greenwashing : A term used by environmental activists to describe corporate marketing that emphasizes positive environmental practices to obscure destructive ones.

• Green around the gills: A description indicating that someone looks physically ill.

• Going green: An expression commonly used to denote efforts towards environmental preservation, including practices such as recycling.

• Looking green: Describes a person who appears revolted or repulsed.