Code MQ3-21 (Breezeway) reflects 66% of incident D65 light. Measured in CAM16-UCS uniform space, Behr Breezeway (MQ3-21) registers J'=87.0, a'=-6.95, and b'=2.25 with HSL (135°, 13%, 82%) and Helmholtz-Kohlrausch perceived value 85.8 L*_HK. Because MQ3-21 carries a*=-5.7 red-green and b*=3.03 yellow-blue balance at chroma C*=6.46, Breezeway projects a cool organic sage green-grey character across drywall and millwork.
Thermal lighting shifts Behr MQ3-21 predictably. Under 5000K noon daylight, Breezeway (MQ3-21) holds its native #D4D7C6 swatch; at 4000K cool office LED, MQ3-21 adapts to #DBD5BE; at 3500K halogen, Breezeway transitions to #E0D4B8; at 3000K residential LED, MQ3-21 warms to #E6D2B3; and under 2700K evening bulbs, Breezeway (MQ3-21) settles at #EBD1AF.
When cross-matching Behr Breezeway (MQ3-21, #CCD8CF), Benjamin Moore Colony Green (694, #CCD9CF, LRV 66.96%) scores ΔE2000=0.63 and CAM16=0.55, followed by Swept Away (701, ΔE=1.31). In Sherwin-Williams, Slow Green (SW 6456, #C6D5C9, LRV 63.81%) achieves ΔE2000=2.01 ahead of Fleeting Green (SW 6455, ΔE=2.52). Coordinate MQ3-21 with Ultra Pure White® (UPW) ceilings, Silver Chalice (640E-1) trim, Wind Chill (BL-W7) hallways, and Unwind (GR-W5) accents.