Turquoise Blue

Polyommatus dorylas

Polyommatus (Plebicula) dorylas, the turquoise blue, is a butterfly of the family Lycaenidae. It is found in southern Europe, Asia Minor, the Ural Mountains, Caucasus and Transcaucasia. Its wingspan is 15–17 mm. The butterfly's common name comes from the dazzling bright blue colour of male's wings. The larvae feed on Anthyllis vulneraria. The butterfly flies from May to September in two generations. Habitats include flowery meadows in rocky areas at 500–2000 m.

Turquoise

Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.

Blue

Blue is one of the three primary colours in the RGB (additive) colour model, as well as in the RYB colour model. It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called the Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

Turquoise (color)

Turquoise is a cyan color, based on the mineral of the same name.

turquoise blue

Noun

1. Synonym of turquoise.