Choosing a White for LED Strip Lighting: 2700K to 6000K and CRI 90+

October 22, 2026

Short answer: use 2700K or 3000K for warm, relaxed spaces such as living rooms, bedrooms, restaurants and hotel joinery; 4000K for kitchens, work surfaces, offices and neutral retail; and 6000K only where you want a cool, crisp, daylight look. Whatever the white, choose a colour rendering index (CRI) of 90 or more so materials look like themselves.

What the K number means

Colour temperature is measured in kelvin (K). Lower numbers look warmer and more yellow, like incandescent or candle light; higher numbers look cooler and bluer, like daylight.

White	Looks like	Good for
2700K	Warm, close to an incandescent bulb	Living rooms, bedrooms, hospitality, under-bed and TV-unit glow
3000K	Soft warm white	Kitchens and joinery in warm schemes, restaurants, boutiques
4000K	Neutral white	Kitchen work surfaces, offices, workshops, neutral retail displays
6000K	Cool, crisp white	Cool modern schemes, garages, displays of silver, glass or white goods

Match the white to the room, not the strip

Match the main lighting. A strip that is much cooler or warmer than the ceiling lights stands out as a mistake rather than a feature. If the room is lit at 2700K, a 3000K strip is about as far as you can go.
Think about the materials. Warm whites flatter oak, walnut, brass and warm stone. Neutral and cool whites suit concrete, white lacquer, chrome and grey stone.
Use one white per space. Mixing whites in one sightline, for example 3000K under the wall cabinets and 4000K in the shelves beside them, is easy to notice.

What CRI 90+ means

The colour rendering index (CRI) compares how a light source shows colours against a reference light, on a scale up to 100. Low-CRI strips make wood look flat, food look grey and skin look dull. At CRI 90 or more, colours stay close to how they look in good natural light, which matters for food, timber, stone, fabrics and anything a customer is choosing by colour. Every Linework white has a CRI of 90 or more.

Keeping whites consistent across a project

LEDs are made in batches, and whites can shift slightly from one batch to the next. Order all the strips for one space, in the same white, together, and keep a few spare strips from the same order for repairs.