Color Gamut

The complete range of colours that can be represented or reproduced by a particular colour space, display device, or visual system. In the context of colour vision, a trichromat's gamut encompasses the full range of colours perceivable by typical human vision, while a dichromat's gamut is a reduced subset. When recolouring algorithms produce colours outside the human gamut (so-called imaginary colours with negative RGB values), these must be projected back onto the gamut boundary. Understanding colour gamut is important in accessibility for ensuring that colour choices fall within the perceivable range for users with different types of colour vision.