Code SW 6526 (Icelandic) reflects 67.08% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Icelandic (SW 6526) registers J'=87.5, a'=-5.17, and b'=-7.11 with HSL (205°, 27%, 84%) and Helmholtz-Kohlrausch perceived value 86.3 L*_HK. Because SW 6526 carries a*=-2.62 red-green and b*=-5.92 yellow-blue balance at chroma C*=6.47, Icelandic projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6526 predictably. Under 5000K noon daylight, Icelandic (SW 6526) holds its native #D3D7D8 swatch; at 4000K cool office LED, SW 6526 adapts to #DAD5CF; at 3500K halogen, Icelandic transitions to #DFD4C9; at 3000K residential LED, SW 6526 warms to #E6D2C3; and under 2700K evening bulbs, Icelandic (SW 6526) settles at #EBD1BF.
When cross-matching Sherwin-Williams Icelandic (SW 6526, #CBD8E1), Behr Pale Cornflower (S520-1, #CED9E1, LRV 68%) scores ΔE2000=0.82 and CAM16=0.98, followed by Blue Reflection (ICC-35, ΔE=1.11). In Benjamin Moore, Beacon Gray (2128-60, #CDD7DE, LRV 66.73%) achieves ΔE2000=1.24 ahead of Sheer Bliss (CSP-545, ΔE=1.24). Coordinate SW 6526 with High Reflective White (SW 7757) ceilings, Alabaster (SW 7008) trim, Jubilee (SW 6248) hallways, and Aleutian (SW 6241) accents.