Code SW 6070 (Heron Plume) reflects 75.57% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Heron Plume (SW 6070) registers J'=91.2, a'=-0.52, and b'=3.56 with HSL (42°, 20%, 87%) and Helmholtz-Kohlrausch perceived value 89.9 L*_HK. Because SW 6070 carries a*=-0.21 red-green and b*=4.88 yellow-blue balance at chroma C*=4.88, Heron Plume projects a warm warm yellow-cream character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6070 predictably. Under 5000K noon daylight, Heron Plume (SW 6070) holds its native #EDDFCF swatch; at 4000K cool office LED, SW 6070 adapts to #F4DEC6; at 3500K halogen, Heron Plume transitions to #F9DDC0; at 3000K residential LED, SW 6070 warms to #FFDBBB; and under 2700K evening bulbs, Heron Plume (SW 6070) settles at #FFD9B7.
When cross-matching Sherwin-Williams Heron Plume (SW 6070, #E5E1D8), Behr Painter's White (PPU18-08, #E5E2DA, LRV 76%) scores ΔE2000=0.61 and CAM16=0.53, followed by Shaded Hammock (PPF-11, ΔE=0.67). In Benjamin Moore, Classic Gray (OC-23, #E3E0D7, LRV 74.65%) achieves ΔE2000=0.57 ahead of Classic Gray (OC-23, ΔE=0.57). Coordinate SW 6070 with High Reflective White (SW 7757) ceilings, Arcade White (SW 7100) trim, Comfort Gray (SW 6205) hallways, and Mindful Gray (SW 7016) accents.