Abstract
Perceptually based colour spaces, colour order systems and colour naming systems based on natural language categories are being increasingly applied to the specification of colour appearance of colour VDUs. Since the Natural Colour System (NCS) is defined according to fundamental attributes of colour perception and the NCS colour notations agree well with cognitive and linguistic aspects of colour, the NCS is very convenient for colour selection in human-computer interaction. However, VDU colours have not earlier been visually presented as a virtual NCS colour atlas with coloured patches occupying the appropriate positions in the NCS colour space. In this paper, the NCS is illustrated by displaying the colour stimuli of 4 096 digital RGB combinations into NCS colour triangles representing 80 different NCS hues.
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