Code 790A-2 (Ancient Stone) reflects 70% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Ancient Stone (790A-2) registers J'=88.6, a'=0.89, and b'=1.88 with HSL (24°, 13%, 85%) and Helmholtz-Kohlrausch perceived value 86.9 L*_HK. Because 790A-2 carries a*=1.35 red-green and b*=2.69 yellow-blue balance at chroma C*=3.01, Ancient Stone projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Behr 790A-2 predictably. Under 5000K noon daylight, Ancient Stone (790A-2) holds its native #E5D7CB swatch; at 4000K cool office LED, 790A-2 adapts to #ECD5C2; at 3500K halogen, Ancient Stone transitions to #F1D4BC; at 3000K residential LED, 790A-2 warms to #F8D2B7; and under 2700K evening bulbs, Ancient Stone (790A-2) settles at #FCD1B4.
When cross-matching Behr Ancient Stone (790A-2, #DED8D4), Benjamin Moore Silver Bells (1458, #DCD9D5, LRV 69.7%) scores ΔE2000=1.51 and CAM16=1.11, followed by Hampshire Rocks (1450, ΔE=1.87). In Sherwin-Williams, Simple White (SW 7021, #DFD9D2, LRV 70.07%) achieves ΔE2000=1.56 ahead of Original White (SW 7077, ΔE=1.6). Coordinate 790A-2 with Frost (W-F-500) ceilings, Bridal Veil (W-D-600) trim, Moonlit Beach (RD-W5) hallways, and Ultra Pure White 1850 (1850) accents.