| Primary value | 75 - 150 lux |
| Applies to | Residential bedrooms · Hotel guest rooms · Hostel rooms |
| Exceptions | Reading task lighting → 300-500 lux locally |
| Measured as | Average maintained illuminance on the working plane (~0.85 m above floor for bedrooms). |
| Source | NBC 2016 — Part 8, Section 1, Table 1 ✓ Verified |
Bedrooms need low ambient light to support relaxation and sleep. The 75-150 lux range is enough for dressing, walking, and casual reading without being so bright that it suppresses melatonin or disrupts the room's restful character.
Most bedrooms use a single ceiling light providing ~100 lux ambient, supplemented by bedside lamps for 300+ lux task lighting when reading.