The quality of the reproduction of colours is termed colour rendition. Linear spectra have a very good colour rendition. Linear spectra only permit one single colour to be perceived well. Multiline spectra reproduce several colours of the relevant spectrum well, but in the intermediate areas the colour rendition is weaker. Blue and green colours appear comparatively grey and matt under warm white incandescent light despite excellent colour rendition. However, these hues appear clear and bright under daylight white light from fluorescent lamps - despite poorer colour rendition. When rendering yellow and red hues, this phenomenon of respective weakening and intensifying of the chromatic effect is reversed.