Code SW 6814 (Breathtaking) reflects 63.03% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Breathtaking (SW 6814) registers J'=85.7, a'=-2.27, and b'=-10.44 with HSL (218°, 32%, 83%) and Helmholtz-Kohlrausch perceived value 84.6 L*_HK. Because SW 6814 carries a*=-0.06 red-green and b*=-9.54 yellow-blue balance at chroma C*=9.54, Breathtaking projects a cool cool violet-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6814 predictably. Under 5000K noon daylight, Breathtaking (SW 6814) holds its native #CFD0D9 swatch; at 4000K cool office LED, SW 6814 adapts to #D5CED0; at 3500K halogen, Breathtaking transitions to #DBCDCA; at 3000K residential LED, SW 6814 warms to #E1CCC4; and under 2700K evening bulbs, Breathtaking (SW 6814) settles at #E6CAC1.
When cross-matching Sherwin-Williams Breathtaking (SW 6814, #C7D1E2), Behr Angelic Blue (M540-2, #CED9E9, LRV 69%) scores ΔE2000=1.97 and CAM16=2.57, followed by Monet (PPU15-17, ΔE=2.4). In Benjamin Moore, English Hyacinth (1417, #C8D0E3, LRV 62.73%) achieves ΔE2000=1.49 ahead of Spring Flowers (1430, ΔE=2.16). Coordinate SW 6814 with High Reflective White (SW 7757) ceilings, Extra White (SW 7006) trim, Morning Fog (SW 6255) hallways, and Solitude (SW 6535) accents.