Azure ( , ) is the color between

cyan Cyan () is the color between blue and green on the visible spectrum of light. It is evoked by light with a predominant wavelength between 500 and 520 nm, between the wavelengths of green and blue. In the subtractive color system, or CMYK c ...

and

blue Blue is one of the three primary colours in the RYB color model, RYB colour model (traditional colour theory), as well as in the RGB color model, RGB (additive) colour model. It lies between Violet (color), violet and cyan on the optical spe ...

on the

spectrum A spectrum (: spectra or spectrums) is a set of related ideas, objects, or properties whose features overlap such that they blend to form a continuum. The word ''spectrum'' was first used scientifically in optics to describe the rainbow of co ...

of visible

light Light, visible light, or visible radiation is electromagnetic radiation that can be visual perception, perceived by the human eye. Visible light spans the visible spectrum and is usually defined as having wavelengths in the range of 400– ...

. It is often described as the color of the

sky The sky is an unobstructed view upward from the planetary surface, surface of the Earth. It includes the atmosphere of Earth, atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from ...

on a clear day. On the

RGB color wheel The RGB color model is an additive color model in which the red, green, and blue primary colors of light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three ad ...

, "azure" (

hexadecimal Hexadecimal (also known as base-16 or simply hex) is a Numeral system#Positional systems in detail, positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbo ...

#0080FF) is defined as the color at 210 degrees, i.e., the

hue In color theory, hue is one of the properties (called color appearance parameters) of a color, defined in the CIECAM02 model as "the degree to which a stimulus can be described as similar to or different from stimuli that are described as ...

halfway between

and cyan. In the

RGB color model The RGB color model is an additive color, additive color model in which the red, green, and blue primary colors of light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials ...

, used to create all the colors on a television or computer screen, azure is created by adding a 50% of green light to a 100% of blue light. In the X11 color system, which became a model for early

web colors Web colors are colors used in Web design, displaying web pages on the World Wide Web; they can be described by way of three methods: a color may be specified as an RGB color model, RGB triplet, in hexadecimal format (a ''hex triplet'') or acc ...

, azure is depicted as a pale cyan or white cyan.

Etymology and history

The color azure ultimately takes its name from the vivid-blue

gemstone A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewellery, jewelry or other adornments. Certain Rock (geology), rocks (such ...

lapis lazuli Lapis lazuli (; ), or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color. Originating from the Persian word for the gem, ''lāžward'', lapis lazuli is ...

, a

metamorphic rock Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock ( protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, caus ...

. ' is the

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

word for "stone" and ' is the

genitive In grammar, the genitive case ( abbreviated ) is the grammatical case that marks a word, usually a noun, as modifying another word, also usually a noun—thus indicating an attributive relationship of one noun to the other noun. A genitive can ...

form of the

Medieval Latin Medieval Latin was the form of Literary Latin used in Roman Catholic Church, Roman Catholic Western Europe during the Middle Ages. It was also the administrative language in the former Western Roman Empire, Roman Provinces of Mauretania, Numidi ...

', which is taken from the

Arabic Arabic (, , or , ) is a Central Semitic languages, Central Semitic language of the Afroasiatic languages, Afroasiatic language family spoken primarily in the Arab world. The International Organization for Standardization (ISO) assigns lang ...

''lāzaward'' (), itself from the

Persian Persian may refer to: * People and things from Iran, historically called ''Persia'' in the English language ** Persians, the majority ethnic group in Iran, not to be conflated with the Iranic peoples ** Persian language, an Iranian language of the ...

, which is the name of the stone in Persian and also of a place where lapis lazuli was mined. The name of the stone came to be associated with its color. The French ', the

Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance languag ...

', the Polish ', Romanian ' and ', the Portuguese and

Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many countries in the Americas **Spanish cuisine **Spanish history **Spanish culture ...

', Hungarian ', and the Catalan ''atzur'', all come from the name and color of lapis lazuli. The dropping of the initial ''l'' in Romance languages may be a case of the linguistic phenomenon known as

rebracketing Rebracketing (also known as resegmentation or metanalysis) is a process in historical linguistics where a word originally derived from one set of morphemes is broken down or bracketed into a different set. For example, '' hamburger'', originally ...

, i.e. Romance speakers may have perceived the sound as the initial phoneme of the definitive article in their respective language. The word was adopted into English from the French, and the first recorded use of it as a color name in English was in 1374 in

Geoffrey Chaucer Geoffrey Chaucer ( ; – 25 October 1400) was an English poet, author, and civil servant best known for ''The Canterbury Tales''. He has been called the "father of English literature", or, alternatively, the "father of English poetry". He w ...

's work ''

Troilus and Criseyde ''Troilus and Criseyde'' () is an epic poem by Geoffrey Chaucer which re-tells in Middle English the tragic story of the lovers Troilus and Cressida, Criseyde set against a backdrop of war during the siege of Troy. It was written in ''rhyme ro ...

'', where he refers to "a broche, gold and ''asure''" (a brooch, gold and azure). Some languages, such as

, generally consider azure to be a basic colour, separate and distinct from blue. Some sources even go to the point of defining blue as a darker shade of azure. Azure also describes the color of the mineral

azurite Azurite or '' Azure spar'Krivovichev V. G.'' Mineralogical glossary. Scientific editor A. G. Bulakh. — St.Petersburg: St.Petersburg Univ. Publ. House. 2009. — 556 p. — ISBN 978-5-288-04863-0. ''(in Russian)'' is a soft, deep-blue copp ...

, both in its natural form and as a pigment in various paint formulations. In order to preserve its deep color, azurite was ground coarsely. Fine-ground azurite produces a lighter, washed-out color. Traditionally, the pigment was considered unstable in oil paints, and was sometimes isolated from other colors and not mixed. The use of the term spread through the practice of

heraldry Heraldry is a discipline relating to the design, display and study of armorial bearings (known as armory), as well as related disciplines, such as vexillology, together with the study of ceremony, Imperial, royal and noble ranks, rank and genealo ...

, where " azure" represents a blue color in the system of

tinctures A tincture is typically an extract of plant or animal material dissolution (chemistry), dissolved in ethanol (ethyl alcohol). Solvent concentrations of 25–60% are common, but may run as high as 90%.Groot Handboek Geneeskrachtige Planten by Ge ...

. In

engraving Engraving is the practice of incising a design on a hard, usually flat surface by cutting grooves into it with a Burin (engraving), burin. The result may be a decorated object in itself, as when silver, gold, steel, or Glass engraving, glass ar ...

s, it is represented as a region of parallel horizontal lines, or by the abbreviation ''az.'' or ''b.'' In practice, azure has been represented by any number of shades of blue. In later heraldic practice a lighter blue, called

bleu celeste Bleu celeste (, "sky blue") is a rarely occurring and non-standard tincture (heraldry), tincture in heraldry (not being one of the seven main colours or metals or the three Stain (heraldry), ''staynard colours''). This tincture is sometimes a ...

("sky blue"), is sometimes specified.

Distinction among indigo, azure, and cyan

According to the logic of the

indigo InterGlobe Aviation Limited (d/b/a IndiGo), is an India, Indian airline headquartered in Gurgaon, Haryana, India. It is the largest List of airlines of India, airline in India by passengers carried and fleet size, with a 64.1% domestic market ...

colors are those colors with hue codes between 255 and 225 (degrees), azure colors are those colors with hue codes between 195 and 225, and cyan colors are those colors with hue codes between 165 and 195. Another way of describing it could be that cyan is a mixture of blue and green light, azure is a mixture of blue and cyan light, and indigo is a mixture of blue and violet light. All of the colors shown below in the section ''shades of azure'' are referenced as having a

between 195 and 225 degrees, with the exception of the very pale

X11 The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems. X originated as part of Project Athena at Massachusetts Institute of Technology (MIT) in 1984. The X protocol has been at ...

web color azure – RGB (240, 255, 255) – which, with a hue of 180 degrees, is a tone of

, but follows the artistic meaning of azure as sky blue.

In nature

Insects * Azure bluet (''Enallagma aspersum''), damselfly found in North America * Azure damselfly (''Coenagrion puella''), damselfly found in Europe * Azure hawker (''Aeshna caerulea''), dragonfly in the family Aeshnidae Birds * Azure gallinule (''Porphyrio flavirostris''), bird in the rail family, Rallidae * Azure jay (''Cyanocorax caeruleus'') bird in the crow family, Corvidae * Azure kingfisher (''Alcedo azurea''), bird in the river kingfisher family, Alcedinidae * Azure Tit - Cyanistes cyanus

Azure tit (''Cyanistes cyanus''), bird in the tit family, Paridae * Azure-crowned hummingbird (''Amazilia cyanocephala''), a hummingbird in the family Trochilidae * Azure-hooded jay (''Cyanolyca cucullata''), bird in the crow family, Corvidae * Azure-naped jay (''Cyanocorax heilprini''), bird in the crow family, Corvidae * Azure-rumped tanager (''Tangara cabanisi''), bird in the family Thraupidae * Azure-shouldered tanager (''Thraupis cyanoptera''), bird in the family Thraupidae *

Azure-winged magpie The azure-winged magpie (''Cyanopica cyanus'') is a bird in the crow family. It is 31–35 cm long and similar in overall shape to the Eurasian magpie (''Pica pica'') but is more slender with proportionately smaller legs and bill. It belong ...

(''Cyanopica cyana''), bird in the crow family, Corvidae *

European roller The European roller (''Coracias garrulus'') is the only member of the Coraciidae, roller family breeding in Europe. Its range extends into the Maghreb, West Asia and Central Asia. It winters in southern Africa, primarily in dry wooded savanna and ...

(''Coracias garrulus'') Plants * Azure bluet (''Houstonia caerulea''), flower found in the eastern

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

In culture

*''

Côte d'Azur The French Riviera, known in French as the (; , ; ), is the Mediterranean coastline of the southeast corner of France. There is no official boundary, but it is considered to be the coastal area of the Alpes-Maritimes department, extending fr ...

'' ("Azure Coast") is a name commonly used for the

French Riviera The French Riviera, known in French as the (; , ; ), is the Mediterranean coastline of the southeast corner of France. There is no official boundary, but it is considered to be the coastal area of the Alpes-Maritimes department, extending fr ...

, part of France's southeastern coast on the

Mediterranean Sea The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Eur ...

. * In

Chinese mythology Chinese mythology () is mythology that has been passed down in oral form or recorded in literature throughout the area now known as Greater China. Chinese mythology encompasses a diverse array of myths derived from regional and cultural tradit ...

, the

Azure Dragon The Azure Dragon ( zh, c=青龍, p=Qīnglóng) is one of the Dragon King, Dragon Gods who represent the mount or Chthonic deities, chthonic forces of the Wufang Shangdi, Five Regions' Highest Deities (). It is also one of the Four Symbols o ...

is one of the

Four Symbols The Four Symbols are mythological creatures appearing among the Chinese constellations along the ecliptic, and viewed as the guardians of the four cardinal directions. These four creatures are also referred to by a variety of other names, in ...

of the

Chinese constellation Traditional Chinese astronomy has a system of dividing the celestial sphere into asterisms or constellations, known as "officials" ( Chinese ''xīng guān''). The Chinese asterisms are generally smaller than the constellations of Hellenisti ...

s. It is sometimes called the ''Azure Dragon of the East'' ( zh, t=東方青龍, s=东方青龙, p=Dōngfāng Qīnglóng, first=t). Known as ''Seiryū'' () in

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

and ''Cheongryong'' (／) in

Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...

, it represents the east and the spring season. * Savoy azure (''azzurro Savoia'') is one of the traditional

national colours National colours are frequently part of a country's set of national symbols. Many states and nations have formally adopted a set of colours as their official "national colours" while others have '' de facto'' national colours that have become well ...

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

, taken from the traditional colours of the

House of Savoy The House of Savoy (, ) is a royal house (formally a dynasty) of Franco-Italian origin that was established in 1003 in the historical region of Savoy, which was originally part of the Kingdom of Burgundy and now lies mostly within southeastern F ...

, the ruling house of the Kingdom of Piedmont-Sardinia that established the first modern united Italian State. The association between azure and

Italian nationalism Italian nationalism () is a movement which believes that the Italians are a nation with a single homogeneous identity, and therefrom seeks to promote the cultural unity of Italy as a country. From an Italian nationalist perspective, Italianness i ...

led in the

Italy national football team The Italy national football team () has represented Italy in men's international Association football, football since its first match in 1910. The national team is controlled by the Italian Football Federation (FIGC), the governing body for fo ...

donning azure jerseys, giving them the nickname ''gli Azzurri'' ("the Azures"). It is also the color of the

Italian state police The (State Police or P.S.) is one of the national police forces of Italy. Alongside the Carabinieri, it is the main police force for providing police duties, primarily to cities and large towns, and with its child agencies it is also responsib ...

(''Polizia di Stato''). * Portuguese and Spanish tilework known as ''

azulejo (, ; from the Arabic ) is a form of Portuguese and Spanish painted Tin-glazing, tin-glazed ceramic tilework. ''Azulejos'' are found on the interior and exterior of church (building), churches, palaces, ordinary houses, schools, and nowadays, r ...

'' has the same etymology due to the color blue (''azul'') being used in its design. Israel-flag01

* In

modern Hebrew Modern Hebrew (, or ), also known as Israeli Hebrew or simply Hebrew, is the Standard language, standard form of the Hebrew language spoken today. It is the only surviving Canaanite language, as well as one of the List of languages by first w ...

, the azure color is called ''

Tekhelet ''Tekhelet'' ( ''təḵēleṯ''; also transliterated ''tekheleth'', ''t'chelet'', ''techelet'', and ''techeiles'') is a highly valued blue dye that held great significance in history of the Mediterranean region, ancient Mediterranean civil ...

'' (). Tekhelet and

white White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...

are sacred colors for the

Jewish people Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, religion, and community are highly inte ...

. In the

Torah The Torah ( , "Instruction", "Teaching" or "Law") is the compilation of the first five books of the Hebrew Bible, namely the books of Genesis, Exodus, Leviticus, Numbers and Deuteronomy. The Torah is also known as the Pentateuch () ...

, there is a mitzva to put a Tekhelet thread in the

tzitzit ''Tzitzit'' ( ''ṣīṣīṯ'', ; plural ''ṣīṣiyyōṯ'', Ashkenazi Hebrew, Ashkenazi: '; and Samaritan Hebrew, Samaritan: ') are specially knotted ritual Fringe (trim), fringes, or tassels, worn in antiquity by Israelites and today by o ...

. The colors Tekhelet and white are the national colours of Israel and appear in the

flag of Israel The flag of the State of Israel ( ; ) was adopted on 28 October 1948, five months after the Israeli Declaration of Independence. It consists of a white background with a blue Star of David in the centre and two horizontal blue stripes at the ...

(where the Tekhelet resembles

). * In the

Bandai Namco (commonly known as and formerly Namco Bandai until 2015, also known as Bandai Namco Group,) is a Japanese mass media and entertainment Conglomerate (company), conglomerate founded in 2005 by the merger of Namco and Bandai. The company specia ...

video game series ''

Soulcalibur is a fighting game franchise developed by Bandai Namco Studios and published by Bandai Namco Entertainment. There are a total of seven main installments and various media spin-offs, including music albums and a series of manga books in the ...

'', one of the main characters,

Nightmare A nightmare, also known as a bad dream, Retrieved 11 July 2016. is an unpleasant dream that can cause a strong emotional response from the mind, typically fear but also despair, anxiety, disgust or sadness. The dream may contain situations o ...

, is frequently referred to as the "Azure Knight" due to the azure color of his

armor Armour (Commonwealth English) or armor (American English; see American and British English spelling differences#-our, -or, spelling differences) is a covering used to protect an object, individual, or vehicle from physical injury or damage, e ...

Astronomy

The true color of the exoplanet

HD 189733b HD 189733 b is an exoplanet in the constellation of Vulpecula approximately away from the Solar System. Astronomers in France discovered the planet orbiting the star HD 189733 on October 5, 2005, by observing its transit across the star's face. ...

determined by astronomers is azure blue.

References