Image · ColorNO.119 / 166

Watch: The stretch after sunset before it gets dark: the sky deep blue, windows and streetlights warm yellow. Blue with a little warmth: quiet and still warm.A line-art demo that only illustrates the technique, not finished footage.

Image · Color

Blue Hour蓝调时刻

The deep blue skylight after sunset, just as the city lights come on.

Category: Color
Group: Basics
Medium: Image
Library: 119 / 166

Want to merge it with other techniques (shot size, lighting, style…) into one full prompt? Click “Add to combo”, then pick one from each of the other terms.

Prompt templates are written from how generation models usually behave and have not yet been verified one by one with real generations. “Common pitfalls” are judgment from experience, not official limits.

When to use it

City night scenes, architecture, street scenes that need warm/cool contrast.

Prompt template

blue hour, uniform deep blue sky, ground lights already on, windows and street lamps warm yellow, clear warm-cool contrast.

Sample prompt · generate an image directly

The technique comes first, followed by the subject, scene, details and aspect ratio. Paste it straight into an image model and swap in your own subject.

Blue hour, an even deep blue sky, the lights on the ground already on, windows and streetlights warm yellow, clear warm/cool contrast. On a sloping street in a seaside town, a row of white houses lights up warm windows as a cyclist passes right under a streetlight. 3:2, no noise or banding in the sky.

Common pitfalls

The sky is fully black; blue hour is actually over.
A long exposure smears the lights into white.

Parameter tips

About 20 to 40 minutes after sunset; write “the sky still deep blue, lights already on” or the model gives a pitch-black night.