ALL meanings of primary colour
pri·ma·ry col·our
P p - countable noun primary colour Primary colours are basic colours that can be mixed together to produce other colours. They are usually considered to be red, yellow, blue, and sometimes green. 0
- noun primary colour any of three spectral colours (usually red, green, and blue) that can be mixed to match any other colour, including white light but excluding black 0
- noun primary colour any one of the spectral colours cyan, magenta, or yellow that can be subtracted from white light to match any other colour. An equal mixture of the three produces a black pigment 0
- noun primary colour any one of the colours red, yellow, green, or blue. All other colours look like a mixture of two or more of these colours and they play a unique role in the processing of colour by the visual system 0