Code OC-11 (Clay Beige) reflects 63.18% of incident D65 light. Measured in CAM16-UCS uniform space, Benjamin Moore Clay Beige (OC-11) registers J'=85.6, a'=0.17, and b'=7.54 with HSL (40°, 28%, 79%) and Helmholtz-Kohlrausch perceived value 84.2 L*_HK. Because OC-11 carries a*=0.12 red-green and b*=11.18 yellow-blue balance at chroma C*=11.18, Clay Beige projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Benjamin Moore OC-11 predictably. Under 5000K noon daylight, Clay Beige (OC-11) holds its native #E0CEB3 swatch; at 4000K cool office LED, OC-11 adapts to #E6CCAB; at 3500K halogen, Clay Beige transitions to #EBCBA5; at 3000K residential LED, OC-11 warms to #F1C9A1; and under 2700K evening bulbs, Clay Beige (OC-11) settles at #F6C89D.
When cross-matching Benjamin Moore Clay Beige (OC-11, #D9CFBB), Behr Bell Tower (MQ3-15, #DAD0BB, LRV 64%) scores ΔE2000=0.45 and CAM16=0.44, followed by Sandy Clay (BWC-25, ΔE=0.81). In Sherwin-Williams, Wool Skein (SW 6148, #D9CFBA, LRV 63.15%) achieves ΔE2000=0.39 ahead of Oyster Bar (SW 7565, ΔE=0.55). Coordinate OC-11 with White Opulence (OC-69) ceilings, Wedding Veil (2125-70) trim, October Sky (2162-70) hallways, and Cancun Sand (2016-70) accents.