Sherwin-Williams Mild Blue (SW 6533) records 65.28% LRV and 85.2 L*_HK lightness (#CBD5DB, RGB 203/213/219). Its CIELAB coordinates (L*=84.69, a*=-2.23, b*=-4.12, C*=4.68, h°=241.6°) place SW 6533 in the Cool Coastal Blue-Grey class. Top cross-brand matches for Mild Blue (SW 6533) are Behr Siberian Ice (MQ3-57, ΔE=1.05) and Benjamin Moore Beacon Gray (2128-60, ΔE=0.7).
Sherwin-Williams Mild Blue (SW 6533, #CBD5DB) 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) | Mild Blue (SW 6533) | #CBD5DB | 65.28% | Cool Coastal Blue-Grey | 0.00 (Ref) |
| Behr #1 | Siberian Ice (MQ3-57) | #CFD9DE | 68% | Cool Coastal Blue-Grey | ΔE 1.05 (97.8%) |
| Behr #2 | Light Drizzle (N480-1) | #C9D3D7 | 64% | Cool Coastal Blue-Grey | ΔE 1.13 (97.6%) |
| Benjamin Moore #1 | Beacon Gray (2128-60) | #CDD7DE | 66.73% | Cool Coastal Blue-Grey | ΔE 0.70 (98.5%) |
| Benjamin Moore #2 | Silver Mist (1619) | #C8D2D6 | 63.13% | Cool Coastal Blue-Grey | ΔE 1.26 (97.4%) |
Cross-room ΔE=1.05 equivalent for SW 6533: Siberian Ice (MQ3-57) delivers +2.7 LRV points lighter than Mild Blue (SW 6533) with matched C*=4.35 saturation.
Cross-room ΔE=1.13 equivalent for SW 6533: Light Drizzle (N480-1) delivers -1.3 LRV points deeper than Mild Blue (SW 6533) with -0.58 softer C*=4.1 chroma.
Cross-room ΔE=1.22 equivalent for SW 6533: Cumberland Fog (560E-2) delivers +2.7 LRV points lighter than Mild Blue (SW 6533) with -0.6 softer C*=4.08 chroma.
Sub-threshold ΔE=0.7 match for SW 6533: Beacon Gray (2128-60) delivers +1.5 LRV points lighter than Mild Blue (SW 6533) with matched C*=5.04 saturation.
Cross-room ΔE=1.26 equivalent for SW 6533: Silver Mist (1619) delivers -2.1 LRV points deeper than Mild Blue (SW 6533) with -0.58 softer C*=4.1 chroma.
Visual ΔE=2.14 alternative to SW 6533: Sheer Bliss (CSP-545) delivers +5.3 LRV points lighter than Mild Blue (SW 6533) with +1.42 higher C*=6.1 chroma.
Coordinated ceiling, trim, wall, sightline, and accent pairings for Mild Blue (#CBD5DB, LRV 65.28%).
Mild Blue (SW 6533, h°=241.6°) tempers intense afternoon sunlight on Sherwin-Williams walls.
Caramel Bamboo & Roasted Birch offsetting Mild Blue (65.28% LRV)
2700K–3000K Warm LED for SW 6533 (4000K renders #DAD2C9)
Need Mild Blue (SW 6533, LRV 65.28%) brighter or deeper? Adjacent Sherwin-Williams fan-deck steps around #CBD5DB:
Calculate exact gallon volume for Sherwin-Williams Mild Blue (SW 6533) accounting for standard North American door (21 sq.ft.) and window (15 sq.ft.) deductions.
Code SW 6533 (Mild Blue) reflects 65.28% of incident D65 light. Measured in CAM16-UCS uniform space, Sherwin-Williams Mild Blue (SW 6533) registers J'=86.7, a'=-4.59, and b'=-5.36 with HSL (202°, 18%, 83%) and Helmholtz-Kohlrausch perceived value 85.2 L*_HK. Because SW 6533 carries a*=-2.23 red-green and b*=-4.12 yellow-blue balance at chroma C*=4.68, Mild Blue projects a cool cool coastal blue-grey character across drywall and millwork.
Thermal lighting shifts Sherwin-Williams SW 6533 predictably. Under 5000K noon daylight, Mild Blue (SW 6533) holds its native #D3D4D2 swatch; at 4000K cool office LED, SW 6533 adapts to #DAD2C9; at 3500K halogen, Mild Blue transitions to #DFD1C3; at 3000K residential LED, SW 6533 warms to #E5CFBE; and under 2700K evening bulbs, Mild Blue (SW 6533) settles at #EACEBA.
When cross-matching Sherwin-Williams Mild Blue (SW 6533, #CBD5DB), Behr Siberian Ice (MQ3-57, #CFD9DE, LRV 68%) scores ΔE2000=1.05 and CAM16=1.39, followed by Light Drizzle (N480-1, ΔE=1.13). In Benjamin Moore, Beacon Gray (2128-60, #CDD7DE, LRV 66.73%) achieves ΔE2000=0.7 ahead of Silver Mist (1619, ΔE=1.26). Coordinate SW 6533 with High Reflective White (SW 7757) ceilings, Snowbound (SW 7004) trim, Jubilee (SW 6248) hallways, and Network Gray (SW 7073) accents.
Spectrophotometric answers for homeowners, interior designers, and painting contractors specifying Sherwin-Williams Mild Blue.
Sherwin-Williams Mild Blue (SW 6533) records an official Light Reflectance Value of 65.28% (#CBD5DB) and a Helmholtz-Kohlrausch perceived lightness of 85.2 L*_HK.
At 65.28% reflectance, Mild Blue (SW 6533) is a mid-tone Sherwin-Williams shade with enough pigment depth (L*=84.69) to hold its #CBD5DB color in bright sun.
CIELAB telemetry (L*=84.69, a*=-2.23, b*=-4.12) classifies Sherwin-Williams Mild Blue (SW 6533) as a Cool Cool Coastal Blue-Grey with C*=4.68 chroma and h°=241.6° hue.
Pair Mild Blue (SW 6533) with South & West Sun Exposure for SW 6533 (65.28% LRV) and Caramel Bamboo & Roasted Birch offsetting Mild Blue (65.28% LRV). Under 2700K evening bulbs, SW 6533 shifts from #CBD5DB toward #EACEBA.
Closest verified equivalents to Sherwin-Williams Mild Blue (SW 6533, #CBD5DB) are Behr Siberian Ice (MQ3-57, #CFD9DE) at ΔE2000=1.05 and Benjamin Moore Beacon Gray (2128-60, #CDD7DE) at ΔE2000=0.7.
Both MQ3-57 and 2128-60 matches are verified against Mild Blue (SW 6533) in CIE ΔE2000 and CAM16-UCS space.
Alongside Sherwin-Williams Mild Blue (SW 6533, LRV 65.28%), our Ou-Luo harmony engine specifies Sherwin-Williams Snowbound (SW 7004, #EDEAE5, LRV 82.58%) in Semi-Gloss or Satin.
Pairing Snowbound (SW 7004) with Mild Blue (SW 6533) frames door casings and baseboards cleanly.