Lighting buying guide
LED colour temperature: 2700 K, 3000 K or 4000 K?
Colour temperature in kelvins describes the shade of white light. It changes how a room feels but does not replace a comparison of brightness in lumens.
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Understanding common colour temperatures
| Colour temperature | Typical appearance | What to consider |
|---|---|---|
| About 2700 K | Warm white, similar in tone to traditional incandescent light. | Often chosen for a softer atmosphere. |
| About 3000 K | Warm white with a slightly less yellow appearance. | Compare with nearby lights and finishes. |
| About 4000 K | A more neutral-looking white. | Often considered for work areas or a cleaner visual effect. |
| Higher values | Cooler, more bluish-looking white. | Check the intended use and personal comfort. |
Choose for the actual room
Look at wall colours, furniture and other light sources together. The same lamp can appear different against warm wood, white tiles or a dark wall. Avoid choosing from a screen image alone: camera settings and displays change the appearance.
Try to keep adjacent lights consistent unless you deliberately want different zones. Even two products marked with the same nominal kelvin value can show differences; compare the manufacturer, series and colour consistency information.
Colour temperature is not brightness
- Compare lumens separately. A cooler-looking source is not automatically brighter.
- CRI describes colour rendering and is a separate parameter from kelvins.
- CCT or tunable white means adjustable white; check its actual range and controls.
- Dim-to-warm changes the white tone while dimming. Ordinary dimming need not change colour.
- RGB or RGBW colour effects are not the same as adjustable white. Check the white-light function and output.
Questions before buying
Does 4000 K give more light than 2700 K?
Not necessarily. Compare lumens; kelvins describe the colour of white light.
Can every LED change its colour temperature?
No. The product must specifically support it, with the required driver and controls.
Prepared by Twoje-Lampy.pl · updated 24 October 2026.
Technical references: www.philips-hue.com.