Color Temperature (Kelvin)
In digital photography, the term color temperature is sometimes used interchangeably with white balance, which allow a remapping of color values to simulate variations in ambient color temperature. Most digital cameras and raw image software provide presets simulating specific ambient values (e.g., sunny, cloudy, tungsten, etc.) while others allow explicit entry of white balance values in kelvins.
These settings vary color values along the blue?yellow axis, while some software includes additional controls (sometimes labeled "tint") adding the magenta?green axis, and are to some extent arbitrary and a matter of artistic interpretation. Use of absolute color temperature values are unlikely to be popular with digital photographers, as those with physical science backgrounds will note. However the general idea of high K (blue-white) and low K (red-orange) will inform all who seek to experiment with their own hardware and software.