Code S220-1 (Autumn Blush) reflects 66% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Autumn Blush (S220-1) registers J'=87.2, a'=3.24, and b'=7.10 with HSL (28°, 40%, 82%) and Helmholtz-Kohlrausch perceived value 85.7 L*_HK. Because S220-1 carries a*=3.84 red-green and b*=10.82 yellow-blue balance at chroma C*=11.48, Autumn Blush projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Behr S220-1 predictably. Under 5000K noon daylight, Autumn Blush (S220-1) holds its native #EBD0B8 swatch; at 4000K cool office LED, S220-1 adapts to #F1CEAF; at 3500K halogen, Autumn Blush transitions to #F6CDAA; at 3000K residential LED, S220-1 warms to #FCCBA5; and under 2700K evening bulbs, Autumn Blush (S220-1) settles at #FFCAA2.
When cross-matching Behr Autumn Blush (S220-1, #E4D1C0), Benjamin Moore Soft Satin (2164-60, #E6D4C4, LRV 68.15%) scores ΔE2000=0.81 and CAM16=1, followed by White Oaks (1080, ΔE=1.27). In Sherwin-Williams, Pueblo (SW 7711, #E6D0BD, LRV 65.91%) achieves ΔE2000=1.17 ahead of Only Natural (SW 7596, ΔE=1.63). Coordinate S220-1 with Polar Bear (W-F-200) ceilings, White Glove (W-D-610) trim, White Grapefruit (P230-1) hallways, and Historic Cream (ECC-49-2) accents.