Color temperature can be used to gauge the hue of white that a light source produces. It is measured in degrees Kelvin (K) and can be used to determine the warmth (yellowish hue) or coolness (bluish hue) of a white light.
In many public areas, a warmer white is chosen to promote relaxation, where a cooler white may be chosen in buildings where concentration is important, such as offices.
Below is a scale that will graphically display the range of the color temperature scale.
Some common colors associated with the color temperature scale are:
| Candlelight: | 1500K |
| Incandescent Bulb: | 3000K |
| Warm White: | 2900-3200K |
| Pure White: | 4100-4300K |
| Natural White: | 4200-4500K |
| Daylight White: | 5000-5500K |
| Cool White: | 5500-6000K |