Code SW 6208 (Pewter Green) reflects 11.85% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Pewter Green (SW 6208) registers J'=43.3, a'=-3.88, and b'=3.93 with HSL (87°, 5%, 37%) and Helmholtz-Kohlrausch perceived value 41.4 L*_HK. Because SW 6208 carries a*=-3.42 red-green and b*=4.58 yellow-blue balance at chroma C*=5.72, Pewter Green projects a warm soft green-beige character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6208 predictably. Under 5000K noon daylight, Pewter Green (SW 6208) holds its native #626155 swatch; at 4000K cool office LED, SW 6208 adapts to #656151; at 3500K halogen, Pewter Green transitions to #68604E; at 3000K residential LED, SW 6208 warms to #6B5F4C; and under 2700K evening bulbs, Pewter Green (SW 6208) settles at #6D5F4A.
When cross-matching Sherwin-Williams Pewter Green (SW 6208, #5E6259), Behr Painted Turtle (710F-6, #63675E, LRV 13%) scores ΔE2000=1.86 and CAM16=2.13, followed by Black Bamboo (N380-7, ΔE=2.02). In Benjamin Moore, Dark Olive (2140-30, #616253, LRV 11.94%) achieves ΔE2000=3.03 ahead of Rainy Afternoon (1575, ΔE=3.49). Coordinate SW 6208 with High Reflective White (SW 7757) ceilings, Alabaster (SW 7008) trim, Acacia Haze (SW 9132) hallways, and Filmy Green (SW 6190) accents.