Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, manufacturing, astrophysics, and other fields. The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of comparable hue to that light source. The temperature is conventionally stated in units of absolute temperature, kelvin (K). Color temperature is related to Planck's law and to Wien's displacement law.
Higher color temperatures (5,000 K or more) are called cool colors (blueish white); lower color temperatures (2,700–3,000 K) are called warm colors (yellowish white through red).
- 1,700 K Match flame
- 1,850 K Candle flame
- 2,700–3,300 K Incandescent light bulb
- 3,350 K Studio "CP" light
- 3,400 K Studio lamps, photofloods, etc.
- 4,100 K Moonlight, xenon arc lamp
- 5,000 K Horizon daylight
- 5,500–6,000 K Typical daylight, electronic flash
- 6,500 K Daylight, overcast
- 9,300 K CRT screen
Note: These temperatures are merely characteristic;
considerable variation may be present.
Thanks Wikipedia http://en.wikipedia.org/wiki/Color_temperature