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Which of the following color models are defined with three primary colors ?

  • A.RGB and HSV color models
  • B.CMY and HSV color models
  • C.HSV and HLS color models
  • D.RGB and CMY color models

Answer: D

RGB and CMY are defined with three primary colours.

The RGB model uses red, green and blue as its three primaries and the CMY model uses cyan, magenta and yellow. Both are therefore defined by three primary colours.

HSV and HLS describe colour by hue, saturation and value or lightness, which are perceptual attributes and not three primary colours, so options A, B and C that include them are wrong.

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