Code MQ3-24 (Celestial Light) reflects 68% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Celestial Light (MQ3-24) registers J'=87.8, a'=-6.38, and b'=-9.79 with HSL (205°, 42%, 85%) and Helmholtz-Kohlrausch perceived value 87.1 L*_HK. Because MQ3-24 carries a*=-3.54 red-green and b*=-9.01 yellow-blue balance at chroma C*=9.68, Celestial Light projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Behr MQ3-24 predictably. Under 5000K noon daylight, Celestial Light (MQ3-24) holds its native #CFD9DF swatch; at 4000K cool office LED, MQ3-24 adapts to #D6D7D5; at 3500K halogen, Celestial Light transitions to #DCD6CF; at 3000K residential LED, MQ3-24 warms to #E3D4CA; and under 2700K evening bulbs, Celestial Light (MQ3-24) settles at #E7D3C6.
When cross-matching Behr Celestial Light (MQ3-24, #C7DAE8), Benjamin Moore Soft Sky (807, #C1D7E4, LRV 65.28%) scores ΔE2000=1.58 and CAM16=1.76, followed by Jet Stream (814, ΔE=1.63). In Sherwin-Williams, Rhythmic Blue (SW 6806, #CCDBE5, LRV 68.97%) achieves ΔE2000=1.81 ahead of Icelandic (SW 6526, ΔE=2.45). Coordinate MQ3-24 with Ultra Pure White (W-B-500) ceilings, Bridal Veil (W-D-600) trim, Igloo (760E-1) hallways, and Blue Willow (570F-4) accents.