Code 940 (Ancient Oak) reflects 75.2% of incident D65 light. Measured in CAM16-UCS uniform space, Benjamin Moore Ancient Oak (940) registers J'=90.9, a'=-1.68, and b'=7.77 with HSL (49°, 35%, 85%) and Helmholtz-Kohlrausch perceived value 90.2 L*_HK. Because 940 carries a*=-2 red-green and b*=11.37 yellow-blue balance at chroma C*=11.54, Ancient Oak projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Benjamin Moore 940 predictably. Under 5000K noon daylight, Ancient Oak (940) holds its native #EEDFC2 swatch; at 4000K cool office LED, 940 adapts to #F5DEBA; at 3500K halogen, Ancient Oak transitions to #FADDB4; at 3000K residential LED, 940 warms to #FFDBAF; and under 2700K evening bulbs, Ancient Oak (940) settles at #FFD9AB.
When cross-matching Benjamin Moore Ancient Oak (940, #E6E1CB), Behr Antique White 1823 (1823, #E7E2CA, LRV 75.88%) scores ΔE2000=0.73 and CAM16=0.67, followed by Antique White (W-F-320, ΔE=0.73). In Sherwin-Williams, Restoration Ivory (SW 6413, #E9E1CA, LRV 75.69%) achieves ΔE2000=1.36 ahead of Ionic Ivory (SW 6406, ΔE=1.73). Coordinate 940 with Super White (PM-1) ceilings, White (PM-2) trim, Spanish Olive (1509) hallways, and Urban Sophisticate (CSP-160) accents.