Refers to natural light from the sun during the day. Often used in technical or descriptive contexts, such as lighting design or photography.
This room gets plenty of daylight.
昼光色の蛍光灯は自然な明るさだ。
Daylight-color fluorescent lamps give a natural brightness.
daylight color
Compound of 昼 (daytime) and 光 (light). The reading ちゅうこう is the on'yomi for both characters.