Blue-green is the

color Color (American English) or colour (British English) is the visual perceptual property deriving from the spectrum of light interacting with the photoreceptor cells of the eyes. Color categories and physical specifications of color are associ ...

that is between green and blue. It belongs to the cyan family of colors.

Variations

Cyan (aqua)

Cyan, also called

aqua Aqua is the Latin word for water. It is used in many words which relate to water, such as aquatic life. In English, it may also refer to: Arts * Aqua (color), a greenish-blue color Business * Aqua (skyscraper), an 82-story residential skysc ...

, is the blue-green color that is between

blue Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when obs ...

and

green Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 Nanometre, nm. In subtractive color systems, used in painting and color printing, it is created by ...

on a modern RGB color wheel. The modern RGB color wheel replaced the traditional old-fashioned RYB color wheel because it is possible to display much brighter and more saturated colors using the primary and secondary colors of the RGB color wheel. In the terminology of

color theory In the visual arts, color theory is the body of practical guidance for color mixing and the visual effects of a specific color combination. Color terminology based on the color wheel and its geometry separates colors into primary color, seconda ...

RGB color space An RGB color space is any additive color space based on the RGB color model. An RGB color space is defined by chromaticity coordinates of the red, green, and blue additive primaries, the white point which is usually a standard illuminant, and t ...

has a much larger

color gamut In color reproduction, including computer graphics and photography, the gamut, or color gamut , is a certain ''complete subset'' of colors. The most common usage refers to the subset of colors which can be accurately represented in a given circ ...

than RYB color space. The first recorded use of ''cyan'' as a color name in

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...

was in 1879.

Turquoise

The color turquoise, a representation of the color of the

semi-precious stone A gemstone (also called a fine gem, jewel, precious stone, or semiprecious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks (such as lapis lazuli, opal, a ...

turquoise Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula . It is rare and valuable in finer grades and has been prized as a gemstone and ornamental stone for thousands of yea ...

. The first recorded use of ''turquoise'' as a color name in

was in 1573. The color "turquoise" is a light tone of blue-green.

Green-blue

Green-blue was a

Crayola Crayola LLC, formerly the Binney & Smith Company, is an American manufacturing company specializing in art supplies. It is known for its brand ''Crayola'' and best known for its crayons. The company is headquartered in Forks Township, Pennsylvan ...

crayon color from 1958 to 1990.

Bondi Blue

Bondi blue is a color belonging to the

cyan Cyan () is the color between green and blue on the visible spectrum of light. It is evoked by light with a predominant wavelength between 490 and 520 nm, between the wavelengths of green and blue. In the subtractive color system, or CMYK color ...

family of blues. It is very similar to the Crayola crayon color "blue-green".

Apple, Inc. Apple Inc. is an American multinational technology company headquartered in Cupertino, California, United States. Apple is the largest technology company by revenue (totaling in 2021) and, as of June 2022, is the world's biggest company b ...

christened the color of the back of the original iMac computer "Bondi Blue" when it was introduced in 1998. It is said to be named for the color of the water at

Bondi Beach Bondi Beach is a popular beach and the name of the surrounding suburb in Sydney, New South Wales, Australia. Bondi Beach is located east of the Sydney central business district, in the local government area of Waverley Council, in the Easter ...

, in Sydney, Australia.

Blue green (Munsell)

One definition of the color is in the Munsell color system (Munsell 5BG) although there is wide-spread acceptance and knowledge of the colour from the so called blue-green algae which have been recognised and described since the 18th century and probably before that.

Cerulean

Teal

In nature

;Bacteria *

Blue-green algae Cyanobacteria (), also known as Cyanophyta, are a phylum of gram-negative bacteria that obtain energy via photosynthesis. The name ''cyanobacteria'' refers to their color (), which similarly forms the basis of cyanobacteria's common name, blu ...

are a

phylum In biology, a phylum (; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class. Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature f ...

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among ...

that obtain their energy through

photosynthesis Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored i ...

. ;Fish * The blue green damselfish is a species of

damselfish Damselfish are those within the subfamilies Abudefdufinae, Chrominae, Lepidozyginae, Pomacentrinae, and Stegastenae within the family Pomacentridae. Most species within this group are relatively small, with the largest species being about 30 ...

. ;Lakes *

Glacial flour Rock flour, or glacial flour, consists of fine-grained, silt-sized particles of rock, generated by mechanical grinding of bedrock by glacial erosion or by artificial grinding to a similar size. Because the material is very small, it becomes suspe ...

, powdered rock, can turn a lake to a blue-green color.

In human culture

;Linguistics * In some

language Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of met ...

s, blue and green are considered a single color. ;Religion * In the

iconography Iconography, as a branch of art history, studies the identification, description and interpretation of the content of images: the subjects depicted, the particular compositions and details used to do so, and other elements that are distinct fro ...

of the

Virgin of Guadalupe Our Lady of Guadalupe ( es, Nuestra Señora de Guadalupe), also known as the Virgin of Guadalupe ( es, Virgen de Guadalupe), is a Catholic title of Mary, mother of Jesus associated with a series of five Marian apparitions, which are believed t ...

, she is often depicted as wearing a blue-green colored robe. The color is significant to the

Mexica The Mexica (Nahuatl: , ;''Nahuatl Dictionary.'' (1990). Wired Humanities Project. University of Oregon. Retrieved August 29, 2012, frolink/ref> singular ) were a Nahuatl-speaking indigenous people of the Valley of Mexico who were the rulers of ...

s because in the

Aztec religion The Aztec religion is a monistic pantheism in which the Nahua concept of was construed as the supreme god , as well as a diverse pantheon of lesser gods and manifestations of nature. The popular religion tended to embrace the mythological and ...

. Also, Blue-green is known as

Maya blue Maya blue ( es, azul maya) is a unique bright azure blue pigment manufactured by cultures of pre-Columbian Mesoamerica, such as the Mayans and Aztecs. Manufacture The Maya blue pigment is a composite of organic and inorganic constituents, prim ...

pre-Columbian In the history of the Americas, the pre-Columbian era spans from the original settlement of North and South America in the Upper Paleolithic period through European colonization, which began with Christopher Columbus's voyage of 1492. Usually, th ...

cultures. In the

Nahuatl Nahuatl (; ), Aztec, or Mexicano is a language or, by some definitions, a group of languages of the Uto-Aztecan language family. Varieties of Nahuatl are spoken by about Nahua peoples, most of whom live mainly in Central Mexico and have smaller ...

culture blue represents the center of fire and

tonalli Tonalli (see also: Tonal (mythology), Tonal) plays a multiplicity of roles; acting as a day sign, body part, and a symbol of the sun's warmth. Ancient Nahua people believed that it was located in the hair and the fontanel area of one's skull, and th ...

. Also sometimes the blue color is diluted so it appears as a

on manuscripts. The color is often used for the representation of Aztec rulers and European kings. ;Politics *Variations of blue-green are the political colours (or one of the political colours) of various political parties, including: **

DENK Denk may refer to: People *Jeremy Denk (born 1970), American classical pianist * Michael K. Denk, Canadian professor of chemistry * Paula Denk (1908–1978), German actress *Ralph Denk (born 1973), German cyclist and cycling manager *Ulrike Denk ( ...

(

The Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

) ** Brexit Party/Reform UK (

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

) **

People-Animals-Nature People–Animals–Nature ( pt, Pessoas-Animais-Natureza, PAN) is an environmentalist, animal rights and animal welfare focused political party in Portugal, founded in 2009. In 2015, they won one seat in the Assembly of the Republic.

(

Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...

) ** Justice Party (

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

) *In Australia, a loosely-aligned group of independent and minor party candidates that ran in the 2022 Australian federal election were called

teal independents The teal independents, sometimes simply referred to as teals, are a loosely-aligned group of independent and minor party politicians in Australian politics. They have been characterised as strongly advocating for increased action to mitigate cli ...

for their blend of

and blue (Liberal) politics.

References

{{Color topics Shades of cyan Shades of blue Shades of green