Code SW 6238 (Icicle) reflects 73.18% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Icicle (SW 6238) registers J'=90.2, a'=-2.99, and b'=-1.88 with HSL (192°, 7%, 87%) and Helmholtz-Kohlrausch perceived value 88.7 L*_HK. Because SW 6238 carries a*=-1.16 red-green and b*=-0.96 yellow-blue balance at chroma C*=1.51, Icicle projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6238 predictably. Under 5000K noon daylight, Icicle (SW 6238) holds its native #E3DED7 swatch; at 4000K cool office LED, SW 6238 adapts to #EADCCD; at 3500K halogen, Icicle transitions to #F0DBC7; at 3000K residential LED, SW 6238 warms to #F6D9C2; and under 2700K evening bulbs, Icicle (SW 6238) settles at #FBD8BE.
When cross-matching Sherwin-Williams Icicle (SW 6238, #DBDFE0), Behr Etched Glass (MQ3-27, #DDE2E2, LRV 75%) scores ΔE2000=1.01 and CAM16=1.14, followed by Billowing Clouds (HDC-CT-16, ΔE=1.07). In Benjamin Moore, Whirlpool (1436, #DEE2E3, LRV 75.43%) achieves ΔE2000=0.67 ahead of Whirlpool (CC-910, ΔE=0.67). Coordinate SW 6238 with High Reflective White (SW 7757) ceilings, Ceiling Bright White (SW 7007) trim, Krypton (SW 6247) hallways, and Online (SW 7072) accents.