Blue-green is a color

Color

Color or colour is the visual perceptual property corresponding in humans to the categories called red, green, blue and others. Color derives from the spectrum of light interacting in the eye with the spectral sensitivities of the light receptors...

 that is a representation of the color that is between blue and green on a typical traditional old-fashioned RYB color wheel

RYB color model

RYB is a historical set of colors used in subtractive color mixing, and is one commonly used set of primary colors...

.

Blue-green is belongs to the cyan

Cyan

Cyan from , transliterated: kýanos, meaning "dark blue substance") may be used as the name of any of a number of colors in the blue/green range of the spectrum. In reference to the visible spectrum cyan is used to refer to the color obtained by mixing equal amounts of green and blue light or the...

 family of colors.

The source of this color is the List of Crayola crayon colors. Blue-green has been a Crayola

Crayola

Crayola is a brand of artists' supplies manufactured by Crayola LLC, which was founded in 1885 as Binney & Smith. It is best known for its crayons...

 crayon color since 1949.

Cyan (aqua)

Teal is a medium blue-green color. It is named after the Common Teal

Common Teal

The Eurasian Teal or Common Teal is a common and widespread duck which breeds in temperate Eurasia and migrates south in winter. The Eurasian Teal is often called simply the Teal due to being the only one of these small dabbling ducks in much of its range...

, a member of the duck

Duck

Duck is the common name for a large number of species in the Anatidae family of birds, which also includes swans and geese. The ducks are divided among several subfamilies in the Anatidae family; they do not represent a monophyletic group but a form taxon, since swans and geese are not considered...

 family, whose eyes are surrounded by the color.

The color teal has a hue

Hue

Hue is one of the main properties of a color, defined technically , as "the degree to which a stimulus can be describedas similar to or different from stimuli that are described as red, green, blue, and yellow,"...

 that is exactly halfway between blue and green and a value (brightness) that is exactly halfway between white

White

White is a color, the perception of which is evoked by light that stimulates all three types of color sensitive cone cells in the human eye in nearly equal amounts and with high brightness compared to the surroundings. A white visual stimulation will be void of hue and grayness.White light can be...

 and black

Black

Black is the color of objects that do not emit or reflect light in any part of the visible spectrum; they absorb all such frequencies of light...

.

The first recorded use of Teal as a color name in English was in 1917.

Blue-green in nature

Bacteria

• Blue-green algae are a phylum
  Phylum
  In biology, a phylum The term was coined by Georges Cuvier from Greek φῦλον phylon, "race, stock," related to φυλή phyle, "tribe, clan." is a taxonomic rank below kingdom and above class. "Phylum" is equivalent to the botanical term division....
  
   of bacteria
  Bacteria
  Bacteria are a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals...
  
   that obtain their energy through photosynthesis
  Photosynthesis
  Photosynthesis is a chemical process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. Photosynthetic organisms are called photoautotrophs, since they can...
  
  .

Fish

• The blue green damselfish is a species of damselfish
  Damselfish
  Damselfish comprise the family Pomacentridae except those of the genera Amphiprion and Premnas. They can grow up to long. While most are marine, a few species inhabit the lower stretches of rivers in freshwater. Damselfish usually have bright colors. in tropical coral reefs, and many of those are...
  
  .

Blue-green in human culture

Religion

• In the iconography
  Iconography
  Iconography is the branch of art history which studies the identification, description, and the interpretation of the content of images. The word iconography literally means "image writing", and comes from the Greek "image" and "to write". A secondary meaning is the painting of icons in the...
  
   of the Virgin of Guadalupe, she is often depicted as wearing a blue-green colored robe. The color is significant to Mexican Indians and mestizos because in the Aztec religion
  Aztec religion
  Aztec religion is the Mesoamerican religion practiced by the Aztec empire. Like other Mesoamerican religions, it had elements of human sacrifice in connection with a large number of religious festivals which were held according to patterns of the Aztec calendar...
  
  , blue-green was the color reserved for the divine couple Ometecuhtli and Omecihuatl.