Code SW 6771 (Bathe Blue) reflects 70.1% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Bathe Blue (SW 6771) registers J'=88.6, a'=-11.70, and b'=-5.29 with HSL (185°, 37%, 83%) and Helmholtz-Kohlrausch perceived value 88.2 L*_HK. Because SW 6771 carries a*=-9.23 red-green and b*=-4.79 yellow-blue balance at chroma C*=10.4, Bathe Blue projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6771 predictably. Under 5000K noon daylight, Bathe Blue (SW 6771) holds its native #CBDFDA swatch; at 4000K cool office LED, SW 6771 adapts to #D2DDD0; at 3500K halogen, Bathe Blue transitions to #D8DCCA; at 3000K residential LED, SW 6771 warms to #DFDAC5; and under 2700K evening bulbs, Bathe Blue (SW 6771) settles at #E4D9C1.
When cross-matching Sherwin-Williams Bathe Blue (SW 6771, #C2E0E3), Behr Ethereal Mood (MQ3-52, #CCE7EB, LRV 76%) scores ΔE2000=2.07 and CAM16=2.65, followed by Basin Blue (M470-2, ΔE=2.08). In Benjamin Moore, Bird'S Egg (2051-60, #BEDCDD, LRV 67.15%) achieves ΔE2000=1.34 ahead of Crystal Springs (764, ΔE=1.44). Coordinate SW 6771 with High Reflective White (SW 7757) ceilings, Extra White (SW 7006) trim, Rain (SW 6219) hallways, and Aqua‐Sphere (SW 7613) accents.