Code ECC-21-1 (Desert Plain) reflects 73% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Desert Plain (ECC-21-1) registers J'=90.0, a'=-0.49, and b'=7.33 with HSL (43°, 35%, 84%) and Helmholtz-Kohlrausch perceived value 89 L*_HK. Because ECC-21-1 carries a*=-0.61 red-green and b*=10.79 yellow-blue balance at chroma C*=10.81, Desert Plain projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Behr ECC-21-1 predictably. Under 5000K noon daylight, Desert Plain (ECC-21-1) holds its native #EDDBC0 swatch; at 4000K cool office LED, ECC-21-1 adapts to #F3DAB8; at 3500K halogen, Desert Plain transitions to #F9D9B2; at 3000K residential LED, ECC-21-1 warms to #FFD7AD; and under 2700K evening bulbs, Desert Plain (ECC-21-1) settles at #FFD6A9.
When cross-matching Behr Desert Plain (ECC-21-1, #E5DDC9), Benjamin Moore Natural Wicker (950, #E7DECA, LRV 73.73%) scores ΔE2000=0.55 and CAM16=0.5, followed by Bone White (I-03, ΔE=0.55). In Sherwin-Williams, Polar Bear (SW 7564, #E8DFCA, LRV 74.43%) achieves ΔE2000=0.69 ahead of Restoration Ivory (SW 6413, ΔE=1.4). Coordinate ECC-21-1 with Ultra Pure White® (UPW) ceilings, Vibrant White (BWC-12) trim, Stately White (BXC-29) hallways, and Pebble Stone (750D-4) accents.