Trichromacy

"Trichromat" redirects here. For the chemical ion species, see Trichromate.

Close-up of a trichromatic in-line shadow mask CRT display, which creates most visible colors through combinations and different levels of the three primary colors: red, green and blue

Trichromacy or trichromatism is the possession of three independent channels for conveying color information, derived from the three different types of cone cells in the eye.[1] Organisms with trichromacy are called trichromats.

The normal explanation of trichromacy is that the organism's retina contains three types of color receptors (called cone cells in vertebrates) with different absorption spectra. In actuality, the number of such receptor types may be greater than three, since different types may be active at different light intensities. In vertebrates with three types of cone cells, at low light intensities the rod cells may contribute to color vision.

  1. ^ "Color Glossary". Archived from the original on 4 October 2015. Retrieved 8 November 2006.