Sherwin-Williams Atmospheric (SW 6505) records 66.78% LRV and 86.4 L*_HK lightness (#C2DAE0, RGB 194/218/224). Its CIELAB coordinates (L*=85.5, a*=-6.75, b*=-5.65, C*=8.8, h°=219.9°) place SW 6505 in the Cool Coastal Blue-Grey class. Top cross-brand matches for Atmospheric (SW 6505) are Behr Rain Dance (S480-1, ΔE=0.32) and Benjamin Moore Glacier Blue (1653, ΔE=1.37).
Sherwin-Williams Atmospheric (SW 6505, #C2DAE0) is compared against competitor swatches under ISO/CIE 11664-6 (ΔE2000) and ASTM E308.
| Role / Brand | Paint Color Name & Code | HEX Code | LRV % | Undertone Profile | CIE ΔE 2000 |
|---|---|---|---|---|---|
| SOURCE (Sherwin-Williams) | Atmospheric (SW 6505) | #C2DAE0 | 66.78% | Cool Coastal Blue-Grey | 0.00 (Ref) |
| Behr #1 | Rain Dance (S480-1) | #C3DAE0 | 67% | Cool Coastal Blue-Grey | ΔE 0.32 (99.3%) |
| Behr #2 | Air Blue (S460-1) | #BCD9E0 | 66% | Cool Coastal Blue-Grey | ΔE 1.52 (96.8%) |
| Benjamin Moore #1 | Glacier Blue (1653) | #C8DEE2 | 69.83% | Cool Coastal Blue-Grey | ΔE 1.37 (97.1%) |
| Benjamin Moore #2 | Heaven On Earth (1661) | #C3D7DD | 65.24% | Cool Coastal Blue-Grey | ΔE 1.43 (97%) |
Sub-threshold ΔE=0.32 match for SW 6505: Rain Dance (S480-1) delivers identical 67% reflectance to SW 6505 with matched C*=8.5 saturation.
Cross-room ΔE=1.52 equivalent for SW 6505: Air Blue (S460-1) delivers identical 66% reflectance to SW 6505 with +1.71 higher C*=10.51 chroma.
Cross-room ΔE=1.66 equivalent for SW 6505: Wind Speed (S450-2) delivers -2.8 LRV points deeper than Atmospheric (SW 6505) with -0.65 softer C*=8.15 chroma.
Cross-room ΔE=1.37 equivalent for SW 6505: Glacier Blue (1653) delivers +3 LRV points lighter than Atmospheric (SW 6505) with -0.93 softer C*=7.87 chroma.
Cross-room ΔE=1.43 equivalent for SW 6505: Heaven On Earth (1661) delivers -1.5 LRV points deeper than Atmospheric (SW 6505) with -1.22 softer C*=7.58 chroma.
Cross-room ΔE=1.86 equivalent for SW 6505: Ashwood Gray (1654) delivers -5 LRV points deeper than Atmospheric (SW 6505) with +0.83 higher C*=9.63 chroma.
Coordinated ceiling, trim, wall, sightline, and accent pairings for Atmospheric (#C2DAE0, LRV 66.78%).
Atmospheric (SW 6505, h°=219.9°) tempers intense afternoon sunlight on Sherwin-Williams walls.
Caramel Bamboo & Roasted Birch offsetting Atmospheric (66.78% LRV)
2700K–3000K Warm LED for SW 6505 (4000K renders #D1D7CE)
Need Atmospheric (SW 6505, LRV 66.78%) brighter or deeper? Adjacent Sherwin-Williams fan-deck steps around #C2DAE0:
Calculate exact gallon volume for Sherwin-Williams Atmospheric (SW 6505) accounting for standard North American door (21 sq.ft.) and window (15 sq.ft.) deductions.
Code SW 6505 (Atmospheric) reflects 66.78% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Atmospheric (SW 6505) registers J'=87.2, a'=-9.55, and b'=-6.34 with HSL (192°, 33%, 82%) and Helmholtz-Kohlrausch perceived value 86.4 L*_HK. Because SW 6505 carries a*=-6.75 red-green and b*=-5.65 yellow-blue balance at chroma C*=8.8, Atmospheric projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6505 predictably. Under 5000K noon daylight, Atmospheric (SW 6505) holds its native #CAD9D7 swatch; at 4000K cool office LED, SW 6505 adapts to #D1D7CE; at 3500K halogen, Atmospheric transitions to #D7D6C8; at 3000K residential LED, SW 6505 warms to #DED4C2; and under 2700K evening bulbs, Atmospheric (SW 6505) settles at #E3D3BF.
When cross-matching Sherwin-Williams Atmospheric (SW 6505, #C2DAE0), Behr Rain Dance (S480-1, #C3DAE0, LRV 67%) scores ΔE2000=0.32 and CAM16=0.33, followed by Air Blue (S460-1, ΔE=1.52). In Benjamin Moore, Glacier Blue (1653, #C8DEE2, LRV 69.83%) achieves ΔE2000=1.37 ahead of Heaven On Earth (1661, ΔE=1.43). Coordinate SW 6505 with High Reflective White (SW 7757) ceilings, Alabaster (SW 7008) trim, Languid Blue (SW 6226) hallways, and Meditative (SW 6227) accents.
Spectrophotometric answers for homeowners, interior designers, and painting contractors specifying Sherwin-Williams Atmospheric.
Sherwin-Williams Atmospheric (SW 6505) records an official Light Reflectance Value of 66.78% (#C2DAE0) and a Helmholtz-Kohlrausch perceived lightness of 86.4 L*_HK.
At 66.78% reflectance, Atmospheric (SW 6505) is a mid-tone Sherwin-Williams shade with enough pigment depth (L*=85.5) to hold its #C2DAE0 color in bright sun.
CIELAB telemetry (L*=85.5, a*=-6.75, b*=-5.65) classifies Sherwin-Williams Atmospheric (SW 6505) as a Cool Cool Coastal Blue-Grey with C*=8.8 chroma and h°=219.9° hue.
Pair Atmospheric (SW 6505) with South & West Sun Exposure for SW 6505 (66.78% LRV) and Caramel Bamboo & Roasted Birch offsetting Atmospheric (66.78% LRV). Under 2700K evening bulbs, SW 6505 shifts from #C2DAE0 toward #E3D3BF.
Closest verified equivalents to Sherwin-Williams Atmospheric (SW 6505, #C2DAE0) are Behr Rain Dance (S480-1, #C3DAE0) at ΔE2000=0.32 and Benjamin Moore Glacier Blue (1653, #C8DEE2) at ΔE2000=1.37.
Both S480-1 and 1653 matches are verified against Atmospheric (SW 6505) in CIE ΔE2000 and CAM16-UCS space.
Alongside Sherwin-Williams Atmospheric (SW 6505, LRV 66.78%), our Ou-Luo harmony engine specifies Sherwin-Williams Alabaster (SW 7008, #EDEAE0, LRV 82.35%) in Semi-Gloss or Satin.
Pairing Alabaster (SW 7008) with Atmospheric (SW 6505) frames door casings and baseboards cleanly.