Daylight
Daylight" refers to lighting conditions that correspond to natural light on a bright day. Natural daylight has a broad light spectrum given by the sun and a color temperature of approx. 5600 K. Technically, daylight quality has been classified in the standard light types class D (Daylight) D50, D65 and D75. Luminaires that produce light with a color temperature of 5500K to 6500K are called daylight luminaires.