Code GR-W12 (Confident White) reflects 74% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Confident White (GR-W12) registers J'=90.4, a'=-1.12, and b'=6.26 with HSL (46°, 29%, 85%) and Helmholtz-Kohlrausch perceived value 89.4 L*_HK. Because GR-W12 carries a*=-1.19 red-green and b*=8.93 yellow-blue balance at chroma C*=9.01, Confident White projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Behr GR-W12 predictably. Under 5000K noon daylight, Confident White (GR-W12) holds its native #ECDDC5 swatch; at 4000K cool office LED, GR-W12 adapts to #F3DCBC; at 3500K halogen, Confident White transitions to #F8DBB7; at 3000K residential LED, GR-W12 warms to #FED9B2; and under 2700K evening bulbs, Confident White (GR-W12) settles at #FFD8AE.
When cross-matching Behr Confident White (GR-W12, #E4DFCE), Benjamin Moore Muskoka Trail (974, #E5E0D0, LRV 74.69%) scores ΔE2000=0.47 and CAM16=0.48, followed by Plaster Of Paris&Reg; (CSP-185, ΔE=0.47). In Sherwin-Williams, Natural Choice (SW 7011, #E3DED0, LRV 73.28%) achieves ΔE2000=1.24 ahead of Nacre (SW 6154, ΔE=1.66). Coordinate GR-W12 with Polar Bear 1875 (1875) ceilings, Vibrant White (BWC-12) trim, Stately White (BXC-29) hallways, and Camping Tent (N320-4) accents.