tiān​sè

time of day

天色 tiān​sè
time of day noun
The time of day as indicated by the light or color of the sky

Let's go, it's getting late.

color of the sky
The color or appearance of the sky
weather
The state of the weather

Frequency

Movie subtitles
1.19 per million appears in 1% of films
Written text
4.51 per million

Sources