Magenta, yellow, and cyan (red, yellow, blue); these are the subtractive primaries used when mixing dyes, paints, etc., to make all other colors. In the CIE (Commission Internationale de l’Eclairage) system of color measurement, which is the international system most widely used today, the primary color vectors are red, green, and blue-violet. These are additive primaries based on the perception of color of reflected light by the human eye.