Luminous colour and colour temperature

Hello, my name is Anita, and welcome to Paulmann's World of Light on YouTube. When you buy a new bulb, you'll see that you can choose from a whole range of different luminous colours. Another term for luminous colour is colour temperature, and it has a major influence on how we feel. I'll explain today what that means and how you can use colour temperature to achieve specific effects.

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Paulmann Lichtwelt Anita Lichtfarben

Sunlight contains infinite colours, which together produce the light we perceive as white light. Colour temperature describes how white natural or artificial light is. So for example a bulb can be yellowish-warm or bluish-cool.



  • Farbskala Kelvin

Colour temperature is given in kelvin

  • The first range is from 5300K upwards and is called daylight white.
  • The second range is from 3300K – 5300K and is called neutral white.
  • The third range is from 2700K - 3300K. It appears yellowish-warm and is therefore called warm white.

What effect does the luminous colour have on our senses?

It has to do with sunlight. It changes colour temperature throughout the day, and so determines our biorhythm. It affects how fit and able we are.



Anita Lichtfarbe warm 2700 Kelvin

Luminous colour: warm white

The later it is in the day, the redder the natural light. This warm white light is linked to our internal clock. It signals the restorative phase of the night and makes us feel comfortable and relaxed.

For comfortable and relaxing lighting, you should choose a bulb between 2700 and 3000 kelvin. Like these reading lamps.

Conventional bulbs are also 2700 kelvin and are perceived by many as being very pleasant. So if you want to choose the same luminous colour once conventional bulbs are abolished, simply reach for a Paulmann LED. This also emits light at 2700 kelvin.

Luminous colour: neutral white

The morning and afternoon sun shines at 3300-5300K and is called neutral white. Bulbs such as these halogen lamps produce a neutral white light.

Paulmann Lichtwelt Anita Tageslichtweiß

Luminous colour: daylight white

In the middle of the day, sunlight can reach as high as 8000 kelvin. For us this is the most active phase of the day. Choose a bulb with a colour temperature above 5300 kelvin, in other words daylight white, to feel motivated to work. This desk lamp for example produces 6400 kelvin. This is ideal for studying and work that requires concentration.

So there's no confusion: colour temperature doesn't mean the temperature in degrees Celsius, because even as the sun gets warmer at noon, the colour temperature of the light becomes colder. Colour temperature refers to the luminous colour of the light.

Best of luck in choosing the right colour temperature, until next time,

I'm Anita.

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