Code 750A-1 (Chalk) reflects 82% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Chalk (750A-1) registers J'=93.9, a'=-0.39, and b'=2.01 with HSL (37°, 18%, 91%) and Helmholtz-Kohlrausch perceived value 93 L*_HK. Because 750A-1 carries a*=0.13 red-green and b*=2.78 yellow-blue balance at chroma C*=2.78, Chalk projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Behr 750A-1 predictably. Under 5000K noon daylight, Chalk (750A-1) holds its native #F5E8DC swatch; at 4000K cool office LED, 750A-1 adapts to #FCE7D2; at 3500K halogen, Chalk transitions to #FFE6CC; at 3000K residential LED, 750A-1 warms to #FFE4C6; and under 2700K evening bulbs, Chalk (750A-1) settles at #FFE2C2.
When cross-matching Behr Chalk (750A-1, #EDEAE5), Benjamin Moore Sand Dollar (877, #F0EBE4, LRV 83.65%) scores ΔE2000=1.17 and CAM16=1.03, followed by Sand Dollar (OC-71, ΔE=1.17). In Sherwin-Williams, Snowbound (SW 7004, #EDEAE5, LRV 82.58%) achieves ΔE2000=0 ahead of Pure White (SW 7005, ΔE=1.27). Coordinate 750A-1 with Blanca Peak (HDC-NT-04G) ceilings, Maui Mist (BL-W10) trim, Ground Fog (BNC-05) hallways, and Noble Gray (HDC-WR15-3) accents.