Code SW 9180 (Aged White) reflects 74.02% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Aged White (SW 9180) registers J'=90.5, a'=0.48, and b'=6.48 with HSL (38°, 37%, 86%) and Helmholtz-Kohlrausch perceived value 89.5 L*_HK. Because SW 9180 carries a*=0.57 red-green and b*=9.55 yellow-blue balance at chroma C*=9.57, Aged White projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 9180 predictably. Under 5000K noon daylight, Aged White (SW 9180) holds its native #F0DCC4 swatch; at 4000K cool office LED, SW 9180 adapts to #F6DBBB; at 3500K halogen, Aged White transitions to #FCDAB6; at 3000K residential LED, SW 9180 warms to #FFD8B1; and under 2700K evening bulbs, Aged White (SW 9180) settles at #FFD6AD.
When cross-matching Sherwin-Williams Aged White (SW 9180, #E8DECD), Behr Toasted Barley (PPL-60, #E7DDCB, LRV 73%) scores ΔE2000=0.48 and CAM16=0.48, followed by Pale Palomino (HDC-CT-05, ΔE=0.68). In Benjamin Moore, French Macaroon (CSP-335, #EAE1D0, LRV 76.11%) achieves ΔE2000=0.79 ahead of First Crush (CSP-310, ΔE=0.85). Coordinate SW 9180 with High Reflective White (SW 7757) ceilings, Extra White (SW 7006) trim, Sandbar (SW 7547) hallways, and Analytical Gray (SW 7051) accents.