Code SW 6519 (Hinting Blue) reflects 67.86% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Hinting Blue (SW 6519) registers J'=87.8, a'=-5.39, and b'=-4.34 with HSL (196°, 18%, 84%) and Helmholtz-Kohlrausch perceived value 86.4 L*_HK. Because SW 6519 carries a*=-2.94 red-green and b*=-3.24 yellow-blue balance at chroma C*=4.38, Hinting Blue projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6519 predictably. Under 5000K noon daylight, Hinting Blue (SW 6519) holds its native #D6D8D4 swatch; at 4000K cool office LED, SW 6519 adapts to #DDD6CB; at 3500K halogen, Hinting Blue transitions to #E2D5C5; at 3000K residential LED, SW 6519 warms to #E9D3C0; and under 2700K evening bulbs, Hinting Blue (SW 6519) settles at #EED2BC.
When cross-matching Sherwin-Williams Hinting Blue (SW 6519, #CED9DD), Behr Cumberland Fog (560E-2, #CED8DC, LRV 68%) scores ΔE2000=0.46 and CAM16=0.47, followed by Misty Surf (740E-2, ΔE=0.7). In Benjamin Moore, Silver Mist (1619, #C8D2D6, LRV 63.13%) achieves ΔE2000=1.65 ahead of Blue Lace (1625, ΔE=1.67). Coordinate SW 6519 with High Reflective White (SW 7757) ceilings, Alabaster (SW 7008) trim, Colonial Revival Gray (SW 2832) hallways, and Morning Fog (SW 6255) accents.