Color

Color is the visual perception produced by the activation of the different types of cone cells in the eye caused by light. Though color is not an inherent property of matter, color perception is related to an object's light absorption, emission, reflection and transmission. For most humans, visible wavelengths of light are the ones perceived in the visible light spectrum, with three types of cone cells (trichromacy).

Other animals may have a different number of cone cell types or have eyes sensitive to different wavelengths, such as bees that can distinguish ultraviolet, and thus have a different color sensitivity range.
Animal perception of color originates from different light wavelength or spectral sensitivity in cone cell types, which is then processed by the brain.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0