By James Batten, 299 Lighting · Published · Updated
In short
2700K is the warmer, more traditional warm white and suits living rooms, bedrooms and dining; 3000K is slightly crisper and suits kitchens, bathrooms and modern interiors. Keep one colour temperature per room.
Colour temperature is measured in kelvin (K). Lower numbers are warmer and more yellow; higher numbers are cooler and whiter.
The difference
| Colour temperature | Look | Best for |
|---|---|---|
| 2200–2500K | Very warm, candle-like | Restaurants, bars, feature filament bulbs |
| 2700K | Warm white, like a classic bulb | Living rooms, bedrooms, dining rooms |
| 3000K | Warm but crisp | Kitchens, bathrooms, hallways, modern homes |
| 4000K | Neutral white | Offices, workshops, commercial spaces |
Mixing colour temperatures
Mixing 2700K and 3000K in the same room is usually noticeable, especially on white walls. Choose one and stick to it per room. Where you can, choose replaceable bulbs or tunable fittings so you can change later.
Finishes and materials
Brass, gold, wood and warm paint colours look best at 2700K. Marble, white and grey kitchens can look cleaner at 3000K.
Finding the colour temperature
Each Ideal Lux product page lists the colour temperature for integrated LED fittings. Use the Colour temperature filter on any category, for example LED pendants or downlights.
Frequently asked questions
Is 3000K too cold for a living room?
Not usually, but 2700K feels cosier. 3000K suits modern interiors and kitchens.
Can I mix 2700K and 3000K?
It is best to keep one colour temperature per room; the difference is visible side by side.
Which is brighter, 2700K or 3000K?
Neither. Brightness is measured in lumens; colour temperature only describes the colour of the light.
