Code P560-1 (Blissful) reflects 76% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Blissful (P560-1) registers J'=91.5, a'=3.20, and b'=-7.01 with HSL (257°, 29%, 91%) and Helmholtz-Kohlrausch perceived value 90.7 L*_HK. Because P560-1 carries a*=3.89 red-green and b*=-6.33 yellow-blue balance at chroma C*=7.43, Blissful projects a cool cool violet-grey character across drywall and millwork.
Thermal lighting shifts Behr P560-1 predictably. Under 5000K noon daylight, Blissful (P560-1) holds its native #ECDFE4 swatch; at 4000K cool office LED, P560-1 adapts to #F3DDDB; at 3500K halogen, Blissful transitions to #F8DCD4; at 3000K residential LED, P560-1 warms to #FFDACF; and under 2700K evening bulbs, Blissful (P560-1) settles at #FFD9CB.
When cross-matching Behr Blissful (P560-1, #E4E0EE), Benjamin Moore Misty Lilac (2071-70, #EAE3F0, LRV 78.66%) scores ΔE2000=1.52 and CAM16=1.87, followed by Sugarplum (1394, ΔE=1.65). In Sherwin-Williams, Inspired Lilac (SW 6820, #DFD9E4, LRV 70.86%) achieves ΔE2000=2.09 ahead of Elation (SW 6827, ΔE=2.46). Coordinate P560-1 with Ultra Pure White 1850 (1850) ceilings, Bridal Veil (W-D-600) trim, Powder Lilac (S550-2) hallways, and Coveted Gem (N560-2) accents.