Code SW 52 (Pearl Gray) reflects 60.92% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Pearl Gray (SW 52) registers J'=84.5, a'=-3.28, and b'=3.27 with HSL (80°, 8%, 79%) and Helmholtz-Kohlrausch perceived value 82.7 L*_HK. Because SW 52 carries a*=-2.65 red-green and b*=4.11 yellow-blue balance at chroma C*=4.89, Pearl Gray projects a warm soft green-beige character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 52 predictably. Under 5000K noon daylight, Pearl Gray (SW 52) holds its native #D2CDBD swatch; at 4000K cool office LED, SW 52 adapts to #D9CBB4; at 3500K halogen, Pearl Gray transitions to #DECAAF; at 3000K residential LED, SW 52 warms to #E4C8AA; and under 2700K evening bulbs, Pearl Gray (SW 52) settles at #E8C7A7.
When cross-matching Sherwin-Williams Pearl Gray (SW 52, #CBCEC5), Behr Heath Gray (N380-2, #C9CBC2, LRV 59%) scores ΔE2000=0.82 and CAM16=1.01, followed by Silver Setting (PWL-89, ΔE=0.95). In Benjamin Moore, Vapor Trails (1556, #CFD0C5, LRV 62.49%) achieves ΔE2000=1.29 ahead of Sleigh Bells (1480, ΔE=1.41). Coordinate SW 52 with High Reflective White (SW 7757) ceilings, Ceiling Bright White (SW 7007) trim, Alabaster (SW 7008) hallways, and White Flour (SW 7102) accents.