What are the three qualities specific to colour vision
There are three qualities specific to colour vision- hue, saturation, and brightness.
Hue: Hue is the function of a wave length (i.e. rainbow). This quality is illustrated when colours in the four areas-red, yellow, green, and blue-merge.
Saturation: A stimulus that results in a single hue. The greater the mixture with white light the less the saturation.
Brightness: The ease at which an image is seen.