The cells responsible for color vision in mammalian eyes are called cones. Cones are specialized photoreceptor cells located in the retina, the light-sensitive layer at the back of the eye. There are three types of cones, each containing a different pigment that is sensitive to a specific range of wavelengths of light. These pigments are sensitive to red, green, and blue light, respectively. When light stimulates these pigments, they send signals to the brain, which interprets them as colors.