When measuring color temperature or how light appears this measurement is also used to describe different shades of reddish light.
Natural light temperature. Like 4000k color temperature light Cold White. Soft White 2700K 3000K Bright WhiteCool White 3500K 4100K and Daylight 5000K 6500K. The redder the light the more relaxed the mood it creates.
Sunlight in its pure form has a kelvin temperature of around 5000 degrees kelvin and a color rendering index of 100. Natural light like all light has colour temperature. Values falling below 3500 K are generally considered to be in the tungsten range and neutral colors viewed under this illumination often appear more red that they do under natural daylight.
Generally but not exclusively light comes from thermal sources. You then move into 4000k for more fluorescent lights and of course 6500k for a white light like daylight. The colour or warmth of white light is ranked on a scale The Kelvin scale the warmer the colour the lower the colour temperature.
Household fixtures are commonly found in color temperatures on the Kelvin scale of 2700K warm incandescent 3000K warm white halogen and 3500K household fluorescent. The higher the Degrees Kelvin the. Color temperatures higher than 3500K are typically used for.
2700-3000k being warm 4000-5000k being cool. Color temperatures between 3100K and 4500K are referred to as cool white or bright white Light bulbs within this range will emit a more neutral white light and may even have a slightly blue tint. So our eyes will consider 6000K LEDs to be brighter compared to the 5500K which is a natural white and 5000K which is warm white.
The three primary types of light bulb color temperature are. Very simply put a lighting source that closely replicates natural sunlight can be considered a natural light source. This is more a neutral white light range which gives a balance between warm and soft color light.

