Code SW 7006 (Extra White) reflects 85.89% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Extra White (SW 7006) registers J'=95.1, a'=-2.13, and b'=1.75 with HSL (72°, 14%, 93%) and Helmholtz-Kohlrausch perceived value 94.5 L*_HK. Because SW 7006 carries a*=-1.21 red-green and b*=2.3 yellow-blue balance at chroma C*=2.6, Extra White projects a warm soft green-beige character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 7006 predictably. Under 5000K noon daylight, Extra White (SW 7006) holds its native #F6EDE0 swatch; at 4000K cool office LED, SW 7006 adapts to #FEECD7; at 3500K halogen, Extra White transitions to #FFEBD0; at 3000K residential LED, SW 7006 warms to #FFE9CB; and under 2700K evening bulbs, Extra White (SW 7006) settles at #FFE7C7.
When cross-matching Sherwin-Williams Extra White (SW 7006, #EEEFEA), Behr Windmill Wings (610E-1, #F0F1EC, LRV 87%) scores ΔE2000=0.42 and CAM16=0.6, followed by Frost (57, ΔE=0.54). In Benjamin Moore, White Christmas (872, #ECEEEA, LRV 84.94%) achieves ΔE2000=0.65 ahead of Winter Snow (OC-63, ΔE=0.65). Coordinate SW 7006 with High Reflective White (SW 7757) ceilings, Arcade White (SW 7100) trim, Silverpointe (SW 7653) hallways, and Argos (SW 7065) accents.