Colour Rendering – also known as the CRI (Colour Rendering Index) – indicates how accurately colours appear on a surface or object when illuminated by a light source.

The CRI value ranges from 1 to 99:

• A low value means colours appear dull or unnatural.

• A Ra value of 99 represents perfect colour rendering, where the colours of the object or surface appear exactly as they should.

High colour rendering is especially important in environments where accurate colour perception matters, such as shops, offices, museums, or studios.