Color temperature, measured in Kelvin, sets the mood and function of a space. Lower numbers look warm and cozy; higher numbers look cool and crisp. Choosing well comes down to the room and the task.
Warm versus cool
Warm light (2700 to 3000 K) suits relaxing and hospitality spaces. Neutral light (3500 to 4000 K) fits offices and kitchens. Cool light (5000 K and up) suits workshops, hospitals, and display areas.
Keep it consistent
Mixing color temperatures in one space looks jarring. Pick a single CCT per area, and choose fixtures within a tight MacAdam tolerance so they match each other.
| Setting | Suggested CCT |
|---|---|
| Living and hospitality | 2700 to 3000 K |
| Retail and homes | 3000 K |
| Offices and schools | 3500 to 4000 K |
| Kitchens and workshops | 4000 K |
| Hospitals and industrial | 5000 K+ |
See the Color Temperature Comparison Chart and the MacAdam Ellipse Chart.
Choosing the right Kelvin for each room
Color temperature runs from warm (low Kelvin) to cool (high). 2700–3000K is warm and cozy — living rooms, bedrooms, restaurants. 3500–4000K is neutral white — kitchens, bathrooms, offices, and workspaces wanting clean, alert light. 5000K and up is cool daylight — garages, workshops, and task areas needing maximum contrast. Keep color temperature consistent within a room and adjacent open spaces, since mismatched whites are very noticeable. Warmer light flatters skin tones and relaxes; cooler light boosts focus and perceived cleanliness, which is why retail and offices trend neutral-to-cool.