Visual measures of colour

Abstract

Instrumental colour parameters are very useful for quality control and colour matching purposes. However, they have poor correlation with visual parameters of colour. Visual colour order systems, or colour notations, are very useful for effective communication, comparison, recording and formulation of colours. The chapter discusses how colours are assessed visually. Visual perception is a psychological phenomenon which is difficult to measure directly. Hence, various sets of visual colour parameters are proposed by colourists that are not mutually convertible.