Biology
Dichromacy
Dichromacy (di meaning "two" and chroma meaning "color") is the state of having two types of functioning color receptors, called…
Cerebral achromatopsia
Cerebral achromatopsia is a type of color-blindness caused by damage to the cerebral cortex of the brain, rather than abnormalities…
Brown color in science and nature
Brown is a composite color. In the CMYK color model used in printing or painting, brown is made by combining…
White color in science and nature
White is the lightest color and is achromatic (having no hue), because it fully reflects and scatters all the visible…
Gray Color in sciences and nature
Gray is an intermediate color between black and white. It is a neutral or achromatic color, meaning literally that it…
Orange colour in science and nature
Orange is the colour between yellow and red on the spectrum of visible light. Human eyes perceive orange when observing…
Purple in science and nature
Purple is a color intermediate between blue and red. It is similar to violet, but unlike violet, which is a…
Pink color in science and nature
Pink is a pale red color that is named after a flower of the same name. It was first used…
Red color in science and nature
Red is the color at the end of the visible spectrum of light, next to orange and opposite violet. It…