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What LED Colour Temperature Should I Buy?

The first LED lights only produced cool light, but now they can emit all the different shades of white you need for your different activities.

When you buy an LED light, you need to think not only about the amount of light it produces (expressed in lumens), but also the color temperature. This is expressed in kelvins and provides information on the quality of the light, that is, its color and the impression it creates.

Should I choose cold, neutral or warm light?

By playing with color temperature, you can choose the lighting that best suits your location and requirements. You wouldn't light up a bedroom or living room like a store, warehouse, or garden!

Here's how you can best use color temperatures, from cooler to warmer:

Type of light	Kelvins	For...	Impression
Cool white	5 500 to 6 000	Warehouses, utility areas (cellars, garages, storerooms and so on), outdoor floodlights or spotlights, highlighting part of a garden or road signs.	Slightly blue-toned light, too bright for a living space.
Neutral white	4 000 to 4 500	Rooms that need bright lighting: bathrooms, corridors, stairs and entrance halls. Outside: lighting for an outdoor seating area, parking or living space. Also good for shops and commercial spaces.	A bright light which does not tire your eyes.
Warm white	2 500 to 3 000	Inside and living rooms: bedrooms, living room, dining room and so on.	Creates a warm cosy ambiance.
White with a yellow tinge	Around 2200	Light which creates ambiance and for decorative purposes, intimate.	Similar to candle light.

Does light really have temperature?

Kelvin is actually a unit of measurement for temperature. Water freezes at 273.15 K or 0 ° C. Of course, the number of kelvins displayed on the box of your LED bulb does not correspond to the physical heat emitted by the lamp, but rather designates the type of white light emitted. .

In fact, there are many different types of white light, but they are difficult to define and compare. We are able to perceive them in different degrees, depending on the sensitivity of our eyes. There is also a personal subjective dimension at play, namely the impression a light makes and the feelings it causes.

To create an objective measure of this, the scientists decided to define white lights by comparing them to the color that a cold body takes on when heated to different temperatures. First it turns red, then yellow. The higher the number of kelvin, the whiter it becomes.