Color temperature and time: Cooler during the day, warmer in the evening

An office with lighting color temperature that changes with time. The scene is evening: the ceiling lights have been adjusted from 4000K during the day to 3500K, with a warm yellow tint; outside the window, the sky is dimming, and the indoor and outdoor brightness are similar. The work area is still bright but no longer as cool and stark as at noon. The lighting in the lounge area is a step warmer. Avoid: keeping the color temperature fixed all day, using cool white light above 5000K, using the same color temperature for lounge and work areas, having too large a brightness difference between indoor and outdoor.

Translated from Chinese by AI.

一個照明色溫隨時間變化的辦公室。畫面是傍晚:天花的燈已經從白天的四千K調到三千五百K,光線帶著溫暖的黃調;窗外是漸暗的天空,室內外的亮度接近。工作區仍然明亮但不再像正午那樣清冷。休息區的燈更暖一階。避免:讓色溫全天固定不變、使用五千K以上的冷白光、讓休息區與工作區使用相同的色溫、讓室內外的亮度差距過大。