Visible LightStructures in the human eye can see a limited band of the electromagnetic spectrum. This band is known as light, or visible light.
Color of ThingsEach physical thing absorbs and reflects different wavelengths of light, giving things color.
Color PerceptionHumans have trichromatic color vision meaning that we have three types of cones in our eyes that are sensitive to three different spectra. Perception abilities vary from person to person. The average person can distinguish between millions of colors including different hues, tints and shades. The upper bound is around 10 million colors.
How humans perceive different wavelengths of visible light.