Light colour

The light colour refers to the subjective perception of the colour of the light. For whitish light the colour temperature (unit Kelvin K) specifies the colour. The higher the value, the "colder" the effect of the light. Under 3,300 K the light is designated as warm white, between 3,300 K and 5,300 K neutral white and from 5,300 K cool white light is emitted.

See also:

Warm White
Cold White