CCT for Office Lighting: 3000K, 4000K or 5000K?

办公室照明色温选择

4000K (neutral white) is optimal for most offices—balanced alertness and comfort. 3000K (warm) for lounges. 5000K+ (cool) only for design studios or inspection tasks.

📊 Key Data

CCTBest ForCRI
3000KLounge, break rooms, hospitality≥90
3500KExecutive offices, meeting rooms≥80
4000KOpen offices, workstations (standard)≥80
5000KDesign studios, inspection, drafting≥90
Tunable 2700–6500KDynamic offices (circadian lighting)≥90

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