COLOR CONSTANCY AS A FUNCTION OF HUE

The effects of colour categories on colour constancy were studied unde r two illuminants and two neutral grey backgrounds using Munsell chips and colour matching. It was found that the categorical colours: red, yellow, green and blue, which are processed by basic colour-opponent m echanisms, show relatively better colour constancy than intermediate c olours. The dominant wavelength of these categorical colours are close ly related to the typical hues obtained in experiments with narrow-ban d spectral hues. (C) 1997 Elsevier Science B.V.