The higher the number in Kelvin or color temperature, the colder the human eye perceives the light of the lamp. At a low Kelvin number, the light appears much warmer. For example:
- Old incandescent light bulbs have a fairly warm color temperature of about 2800 Kelvin. An energy-saving lamp can have a maximum of 2700 Kelvin and still emit a similar warm light.
- Lamps with a color temperature between 3,000 and 5,000 Kelvin emit a more neutral light that resembles that of an average fluorescent tube.
- Cool gamma, the same as daylight – a color temperature of more than 5000 Kelvin.
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