Color temperature describes whether light looks warm and orange or cool and blue, and it strongly influences the mood of a photo. Cameras correct it with white balance, but you can also use it creatively. Understanding the scale lets you decide when to neutralize a color cast and when to keep it.
The Kelvin Scale
Color temperature is measured in Kelvin. Lower numbers are warm and higher numbers are cool, which seems backward to many people. These are typical general values.
| Light source | Approximate Kelvin | Look |
|---|---|---|
| Candle flame | 1800 to 2000 | Deep orange |
| Household warm bulb | 2700 to 3000 | Warm yellow |
| Sunrise or sunset | 3000 to 4000 | Golden |
| Midday daylight | 5000 to 5600 | Neutral |
| Cloudy sky | 6000 to 7000 | Slightly cool |
| Open shade | 7000 to 8000 | Blue |
How White Balance Works
White balance tells the camera what color the light is, so it can make whites look white. Automatic mode does this well in many scenes, but it can remove the warmth from a sunset or leave a yellow tint under household lamps. Presets such as daylight, shade, cloudy and tungsten give you quick control, and a custom setting lets you set a Kelvin value directly.
Using Warm and Cool Tones
- Warm tones feel cozy, friendly and nostalgic.
- Cool tones feel calm, distant or cold.
- Mixed tones, such as warm lamps against a blue window, add visual interest.
To increase warmth, set a higher Kelvin value or choose the cloudy or shade preset. To cool a scene, set a lower value.
Shooting RAW
RAW files store the data without baking in a white balance, so you can change it later without quality loss. JPEG files lock in the setting, and large changes can look rough. If you are unsure, shoot RAW and fine tune in editing.
Practical Tips
- Use a grey card or a white sheet for an accurate reading in tricky light.
- Keep the same setting across a series so the images match.
- Avoid mixing light sources when skin color matters.
If you edit, remember that most editing tools also offer temperature and tint sliders. Temperature moves between blue and yellow, and tint moves between green and magenta. Small moves are usually enough. Make changes with a neutral object in view, such as a white wall, and compare the result with the original on a screen that is not set too bright.
FAQ
Why does my indoor photo look yellow?
Household bulbs give warm light, and automatic white balance may not fully correct it. Try the tungsten preset or lower the Kelvin setting.
Should I always make whites look neutral?
No. A warm sunset should look warm. Correct color when accuracy matters, and keep the cast when it adds mood.
The Short Version
Low Kelvin means warm light and high Kelvin means cool light. Use white balance to correct or to shape the mood, and shoot RAW when you want freedom to adjust later.
