Washington Blue (BM CW-630)
Illustrative room. Screen colors vary; test a sample before you paint.
Washington Blue (BM CW-630) is a very deep, cool blue from Benjamin Moore: LRV 7.3, so it reflects about 7 percent of the light that hits it.
Colors that go with Washington Blue
Three Benjamin Moore colors picked for Washington Blue by this site's color math: a trim white, a quiet contrast from another family, a dark accent. Benjamin Moore did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Washington Blue, ranked by CIEDE2000 (deltaE): under 1.0 is indistinguishable, 1.0 to 2.3 very close, 2.3 to 5 noticeably different, over 5 clearly different.
| Brand | Closest color | Code | LRV | deltaE | How close |
|---|---|---|---|---|---|
| Sherwin-Williams | Gale Force | SW 7605 | 6 | 3.3 | noticeably different |
| Behr | Midnight Dream | 570F-7 | 6.2 | 2.5 | noticeably different |
| Valspar | Boisterous Blue | 4009-6 | 8 | 4.1 | noticeably different |
| PPG Paints | Sailor's Coat | 1153-7 | 6 | 2.6 | noticeably different |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Washington Blue (LRV 7.3) by LRV.
Lighter than Washington Blue
Darker than Washington Blue
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | CW-630 |
| Hex | #304656 |
| RGB | 48, 70, 86 |
| HSL | 205°, 28%, 26% |
| LRV (light reflectance value) | 7.3 |
| Lab L*, a*, b* | 28.6, -3.8, -12.2 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Washington Blue (BM CW-630), published as #304656
#1A3E54
#424E56
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Benjamin Moore
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Common questions
- What is the LRV of Washington Blue (BM CW-630)?
- Washington Blue has an LRV of 7.3. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Washington Blue is a very deep color.
- What is the closest match to Washington Blue in another brand?
- Midnight Dream (Behr 570F-7) from Behr, at a deltaE of 2.5 (noticeably different).
- Is Washington Blue warm or cool?
- Benjamin Moore lists Washington Blue as cool, with a Cool Blue undertone. Its Lab b* value is -12.2; a higher b* is warmer and yellower, a lower one cooler and bluer.
Sources: LRV and hex as published by the manufacturer, via PaintDB (CC BY 4.0). Color differences are CIEDE2000 values computed by this site from the hex values (data snapshot 2026-10-01). Color names and codes belong to their manufacturers.