The colour of light is expressed in Kelvin (K). Essentially, we are talking about the colour temperature of a lamp.

How does colour temperature work?
With a high colour temperature, the light appears bluer and cooler, whereas with a low colour temperature, the light seems yellower and warmer.

Some tangible examples:

• Candlelight: 1200 K

• Sunrise: 2000 K

• Sunrise after 1 hour: 3500 K

• Daylight: 5000 K

• Midday sun: 5700 K

• Neutral white light: 6500 K

The colour temperature greatly influences the atmosphere in a room. Warm light has a calming effect, while blue light can increase concentration.

Overview of our colour temperatures:

• Flame: 2200 K

• Extra warm white: 2100–2500 K

• Warm white: 2500–3000 K

• Cool white: 4000 K

• Daylight: 6500 K