Code SW 6021 (Dreamy White) reflects 70.87% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Dreamy White (SW 6021) registers J'=89.3, a'=2.24, and b'=2.24 with HSL (17°, 20%, 86%) and Helmholtz-Kohlrausch perceived value 87.7 L*_HK. Because SW 6021 carries a*=2.73 red-green and b*=3.19 yellow-blue balance at chroma C*=4.2, Dreamy White projects a warm warm gold-beige character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6021 predictably. Under 5000K noon daylight, Dreamy White (SW 6021) holds its native #EAD8CC swatch; at 4000K cool office LED, SW 6021 adapts to #F1D6C3; at 3500K halogen, Dreamy White transitions to #F6D5BD; at 3000K residential LED, SW 6021 warms to #FDD3B8; and under 2700K evening bulbs, Dreamy White (SW 6021) settles at #FFD2B4.
When cross-matching Sherwin-Williams Dreamy White (SW 6021, #E3D9D5), Behr Moxie (MQ3-35, #E5DAD8, LRV 72%) scores ΔE2000=1.27 and CAM16=1.04, followed by Pink Chalk (MQ3-3, ΔE=1.42). In Benjamin Moore, Pampas Grass (2110-60, #E8DDD8, LRV 73.95%) achieves ΔE2000=1.08 ahead of Bridal Rose (1247, ΔE=1.86). Coordinate SW 6021 with High Reflective White (SW 7757) ceilings, Extra White (SW 7006) trim, Studio Mauve (SW 62) hallways, and Proper Gray (SW 6003) accents.