What the number means
Colour temperature is measured in kelvin (K). Lower numbers look warmer and more yellow. Higher numbers look cooler and more blue. It describes the colour of the light, not how bright it is.
3000K, warm white
Close to the glow of a traditional lamp. Use it where people relax: living rooms, bedrooms, dining, restaurants, hotel rooms and most outdoor residential lighting.
Warm light flatters wood, stone and skin, which is why almost every LiteArt outdoor wall light and bollard is 3000K.
4000K, neutral white
Clean without feeling cold. A good choice for kitchens, bathrooms, offices, shops and study areas, where you want to see clearly for hours.
If you are unsure between warm and cool for a working area, 4000K is usually the safe answer.
6500K, cool daylight
Bright and bluish. It suits utility areas, workshops, warehouses, parking and street lighting, where visibility matters more than atmosphere.
It can feel harsh in a living space at night, so use it with care at home.
When you cannot decide
3-in-1 fittings switch between all three, so you can decide after installation. Tunable smart fittings go further and let the same room move from 6500K in the morning to 3000K in the evening.
Whatever you choose, keep one colour temperature per room. Mixing warm and cool on the same ceiling almost always looks like a mistake.