Perception of colour hue is primarily determined by the wavelength of the light wave; whereas brightness is determined by the purity of the wave and saturation by the wave amplitude.

Question

Quizplus · Accepted Answer

Perception of color hue is primarily determined by the wavelength of the light wave; brightness is determined by the wave amplitude (or intensity of the light); and saturation is determined by the purity of the wave (how mixed the light is with white light).

Perception of Colour Hue Is Primarily Determined by the Wavelength