Lightness and chroma of computer simulated surfaces lit by lamps of different spectra

By calculating the lightness and chroma of computer simulated surfaces lit by different lamps, this study shows that the average CIE 1976 chroma C * uv of surfaces lit by light of different spectral composition can be significantly different at a fixed illuminance. This study also shows the Spearman rank-order correlation is significant between the average C * uv and each of several light parameters, including gamut area, cone surface area, (S/P) 1/2 , and colour rendering capacity. The higher the value of any of these parameters for a lamp, the greater the average C * uv of surfaces lit under that lamp.