What is the color temperature (Kelvin)?
The color temperature of lighting is the heat of light. This says nothing about whether the lamp is warm or cold, but about whether its light has a cold or warm color. The color temperature is expressed in Kelvin. The higher the Kelvin number, the “colder” and whiter the light. The lower the Kelvin number, the ‘warmer’ and yellower the light.
In lighting, the color temperature varies from warm to cool depending on the type of light source:
- Candlelight: 1500 K.
- Conventional light source: 2600-2700 K.
- Halogen lamp: 2700-3000 K.
- Fluorescent tube: 4500-6500 K.
- Daylight: 5500-7000 K.
Color Temperature Chart