Code SW 6224 (Mountain Air) reflects 73.19% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Mountain Air (SW 6224) registers J'=90.1, a'=-4.93, and b'=-1.17 with HSL (173°, 11%, 86%) and Helmholtz-Kohlrausch perceived value 88.8 L*_HK. Because SW 6224 carries a*=-2.86 red-green and b*=-0.45 yellow-blue balance at chroma C*=2.9, Mountain Air projects a cool organic sage green-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6224 predictably. Under 5000K noon daylight, Mountain Air (SW 6224) holds its native #E0DFD6 swatch; at 4000K cool office LED, SW 6224 adapts to #E7DDCD; at 3500K halogen, Mountain Air transitions to #EDDCC6; at 3000K residential LED, SW 6224 warms to #F3DAC1; and under 2700K evening bulbs, Mountain Air (SW 6224) settles at #F8D9BD.
When cross-matching Sherwin-Williams Mountain Air (SW 6224, #D8E0DF), Behr River Veil (MQ3-50, #D9E0DE, LRV 73%) scores ΔE2000=0.6 and CAM16=0.77, followed by Echo Mist (ECC-31-2, ΔE=0.77). In Benjamin Moore, Lookout Point (1646, #DAE3E2, LRV 75.28%) achieves ΔE2000=0.75 ahead of Mountain Mist (868, ΔE=0.85). Coordinate SW 6224 with High Reflective White (SW 7757) ceilings, Pure White (SW 7005) trim, Krypton (SW 6247) hallways, and Online (SW 7072) accents.