Code SW 7571 (Casa Blanca) reflects 76.56% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Casa Blanca (SW 7571) registers J'=91.6, a'=0.84, and b'=7.17 with HSL (37°, 46%, 87%) and Helmholtz-Kohlrausch perceived value 90.7 L*_HK. Because SW 7571 carries a*=0.96 red-green and b*=10.76 yellow-blue balance at chroma C*=10.8, Casa Blanca projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 7571 predictably. Under 5000K noon daylight, Casa Blanca (SW 7571) holds its native #F5DFC5 swatch; at 4000K cool office LED, SW 7571 adapts to #FBDEBC; at 3500K halogen, Casa Blanca transitions to #FFDDB7; at 3000K residential LED, SW 7571 warms to #FFDBB1; and under 2700K evening bulbs, Casa Blanca (SW 7571) settles at #FFD9AE.
When cross-matching Sherwin-Williams Casa Blanca (SW 7571, #EDE1CE), Behr Buckwheat Flour (S280-1, #EFE2CF, LRV 77%) scores ΔE2000=0.54 and CAM16=0.49, followed by Southwestern Sand (ECC-40-2, ΔE=0.77). In Benjamin Moore, Antique White (909, #F2E5D3, LRV 79.88%) achieves ΔE2000=1.2 ahead of Lambskin (1051, ΔE=1.2). Coordinate SW 7571 with High Reflective White (SW 7757) ceilings, Alabaster (SW 7008) trim, Cargo Pants (SW 7738) hallways, and Loggia (SW 7506) accents.