Code SW 6063 (Nice White) reflects 73.47% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Nice White (SW 6063) registers J'=90.3, a'=1.30, and b'=3.51 with HSL (28°, 25%, 87%) and Helmholtz-Kohlrausch perceived value 89 L*_HK. Because SW 6063 carries a*=1.7 red-green and b*=5.01 yellow-blue balance at chroma C*=5.29, Nice White projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6063 predictably. Under 5000K noon daylight, Nice White (SW 6063) holds its native #EEDBCC swatch; at 4000K cool office LED, SW 6063 adapts to #F4DAC3; at 3500K halogen, Nice White transitions to #FAD9BD; at 3000K residential LED, SW 6063 warms to #FFD7B8; and under 2700K evening bulbs, Nice White (SW 6063) settles at #FFD6B4.
When cross-matching Sherwin-Williams Nice White (SW 6063, #E6DDD5), Behr Patience (PR-W11, #E6DDD6, LRV 74%) scores ΔE2000=0.5 and CAM16=0.37, followed by Pale Cashmere (PPU2-4, ΔE=0.54). In Benjamin Moore, Featherstone (1002, #E2D8CF, LRV 69.93%) achieves ΔE2000=1.23 ahead of Foggy Morning (2106-70, ΔE=1.44). Coordinate SW 6063 with High Reflective White (SW 7757) ceilings, Ibis White (SW 7000) trim, Twilight Gray (SW 54) hallways, and Requisite Gray (SW 7023) accents.