Cold lighting in living spaces
5000 K white in the living room turns the room into an open-plan office
Choosing 'neutral white' or 'cool white' bulbs in living spaces is the most common mistake. See also rule 02.2.
§ 01The principle
The most common residential lighting mistake: choosing bulbs that are too cold in living spaces. "Neutral white" (4000 K) or "cool white" (5000-6500 K) in the living room or bedroom, and the room immediately becomes clinical, like an office or a shop.
This rule reprises and summarises rule 02.2 on colour temperature. If you have already read it, go directly to the solutions.
See rule 02.2 for full detail
2700-3000 K in living spaces, never 4000 K or above.
§ 02Putting it into practice
Check your current bulbs.
On each bulb, look for the Kelvin (K) indication or the mention "warm white", "neutral white", "cool white".
Warm white (2700-3000 K). Good choice for living spaces.
Neutral white (3500-4000 K). Acceptable in the kitchen or bathroom for function. Avoid in living spaces.
Cool white (5000-6500 K). Avoid in residential spaces, except very specific cases (workshop, basement).
Replace if necessary.
Quality LEDs (with CRI 90+ and correct colour temperature) cost £5-20 per bulb. A modest investment for an immediate transformation of atmosphere.
Brands to know.
Philips Hue. Connected bulbs, variable temperature from 2200 to 6500 K. Allows you to test atmospheres.
IKEA Tradfri. Similar system, more affordable price.
Soraa, Tala. Premium bulbs, CRI 95+, fixed temperature at 2700 K.
The simple test.
In the evening, in your living room, look at your lamps. If the light appears bluish or very white, you have cool light. If the light appears golden or warm, you are in the right register.
In small interiors. The cold lighting mistake is even more visible. Over limited surface, one poorly chosen bulb dominates everything. Systematically invest in 2700 K CRI 90+ bulbs for all living spaces.
- 01Check the colour temperature of every bulb
- 02Choose 2700 K in living spaces, 3000 K in functional kitchen
- 03Invest in CRI 90+ bulbs
- 04Test with variable-temperature connected bulbs
- 01A living room pendant at 5000 K, office atmosphere
- 02Keeping original bulbs without reconsidering
- 03Confusing "bright" and "cold" (you can be bright and warm)
- 04Mixing several temperatures in the same room
§ 03Professional variations
See rule 02.2 for full professional variations.
Three thousand Kelvin maximum in living spaces, or the room becomes an office.
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