Requirements for good colour rendering

For the visual experience, and for performing a visual task and assessing colours in the best possible way, it is of great importance that the colours on surfaces, objects and human skin should be reproduced in a natural and accurate way.

This also affects our safety and well-being. Requirements for the levels of colour rendering, the so-called Ra index, are given for each type of work task under EN 12464-1 in the table of lighting requirements.

Application area