Code 440C-1 (Cool White) reflects 85% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Cool White (440C-1) registers J'=94.9, a'=-4.70, and b'=3.92 with HSL (90°, 29%, 92%) and Helmholtz-Kohlrausch perceived value 94.6 L*_HK. Because 440C-1 carries a*=-4.11 red-green and b*=5.1 yellow-blue balance at chroma C*=6.55, Cool White projects a warm soft green-beige character across drywall and millwork.
Thermal lighting shifts Behr 440C-1 predictably. Under 5000K noon daylight, Cool White (440C-1) holds its native #F2EEDB swatch; at 4000K cool office LED, 440C-1 adapts to #FAEDD1; at 3500K halogen, Cool White transitions to #FFECCB; at 3000K residential LED, 440C-1 warms to #FFEAC5; and under 2700K evening bulbs, Cool White (440C-1) settles at #FFE8C1.
When cross-matching Behr Cool White (440C-1, #EAF0E4), Benjamin Moore Tint Of Mint (851, #EAEFDF, LRV 84.66%) scores ΔE2000=1.62 and CAM16=1.46, followed by Woodland White (463, ΔE=1.97). In Sherwin-Williams, Spinach White (SW 6434, #E4E8DA, LRV 79.36%) achieves ΔE2000=1.99 ahead of White Mint (SW 6441, ΔE=2.1). Coordinate 440C-1 with Frost Bl-w15 (BL-W15) ceilings, Vibrant White (BWC-12) trim, Shy Green (MQ3-48) hallways, and Riverdale (N410-3) accents.