The Colour appearance of near white light sources is normally defined in terms of their correlated colour temperature (CCT), expressed in kelvin (k). The higher the correlated colour temperature the cooler the appearance of the source; the reddish-yellow flame of a candle is about 1900 K; and the bluish-white sky daylight, is over 6500 K.
The choice of an appropriate apparent colour of light source for a room is largely determined by the function of the room. This may involve such psychological aspects of colour as the impression of warmth, relation, clarity etc.
Lamps of different correlated colour temperature should not be used in the same room, unless a specific effect is desired.
This Table is sourced from AS1680.1.