True or false: you should never mix color temperatures for night lighting.

• A. True
• B. False
• C. It depends on the scene
• D. Only for exteriors

Answer: (B)

Color temperature describes how warm or cool a light source looks, measured in kelvin. For night lighting, mixing different color temperatures is not inherently wrong; it’s a deliberate tool to achieve realism, mood, and depth.

In real night scenes you’ll often have multiple light sources with different temps. Warm interior practicals (like lamps) can contrast with cooler exterior moonlight or street lighting. This mix helps viewers sense separate spaces, adds visual interest, and can make the scene feel more natural. For example, a warm glow through a window against a cooler outdoor scene can suggest a cozy interior while the outside reads as nighttime, or a cool key light on a subject with a warmer fill can create separation and emphasis.

There are challenges to watch for, such as keeping white balance coherent and ensuring the mix supports the intended mood rather than confusing the viewer. But the blanket rule that you should never mix color temperatures isn’t correct. The right approach is to consider the scene’s goals, balance, and how the different light sources will render on camera.