Light
Color vision refers to our ability to perceive and distinguish different colors. It involves the processing of light by specialized cells (cones) in our eyes.
A condition characterized by an inability or difficulty distinguishing certain colors due to an absence or malfunctioning of specific cone cells.
The theory that states we perceive colors in terms of opposing pairs (red-green, blue-yellow) which help explain afterimages.
Saturation: Refers to the intensity or purity of a color; how much it deviates from being neutral or desaturated.