primary colours

Generally refers to the traditional primary colors of pigment, red, yellow, and blue, that canot be made from mixtures of other colors, and from which theoretically all other pigment colors may be produced. When two primary colors are mixed together, the result is a secondary color; for example, mixing red and yellow makes orange. For primary colors in the specific context of color vision, use the more specific terms "psychological primary colors" or "physical primary colors."