Code SW 6512 (Balmy) reflects 66.08% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Balmy (SW 6512) registers J'=87.0, a'=-7.94, and b'=-6.01 with HSL (194°, 27%, 82%) and Helmholtz-Kohlrausch perceived value 85.9 L*_HK. Because SW 6512 carries a*=-5.16 red-green and b*=-5.12 yellow-blue balance at chroma C*=7.27, Balmy projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6512 predictably. Under 5000K noon daylight, Balmy (SW 6512) holds its native #CDD7D5 swatch; at 4000K cool office LED, SW 6512 adapts to #D4D5CC; at 3500K halogen, Balmy transitions to #DAD4C6; at 3000K residential LED, SW 6512 warms to #E0D2C1; and under 2700K evening bulbs, Balmy (SW 6512) settles at #E5D1BD.
When cross-matching Sherwin-Williams Balmy (SW 6512, #C5D8DE), Behr Cloudy Sky (S470-1, #C2D5DA, LRV 64%) scores ΔE2000=0.88 and CAM16=1.13, followed by Sky Light View (MQ3-53, ΔE=1.32). In Benjamin Moore, Heaven On Earth (1661, #C3D7DD, LRV 65.24%) achieves ΔE2000=0.46 ahead of Polar Sky (1674, ΔE=1.29). Coordinate SW 6512 with High Reflective White (SW 7757) ceilings, Arcade White (SW 7100) trim, Languid Blue (SW 6226) hallways, and Meditative (SW 6227) accents.