Chiswell Blue (BM CW-660)
Illustrative room. Screen colors vary; test a sample before you paint.
Chiswell Blue (BM CW-660) is a deep, cool blue from Benjamin Moore: LRV 29.5, so it reflects about 30 percent of the light that hits it.
Colors that go with Chiswell Blue
Four Benjamin Moore colors picked for Chiswell Blue by this site's color math: a trim white, a deeper blue, 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 Chiswell 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 | Poolhouse | SW 7603 | 29 | 1.6 | very close |
| Behr | Cold Steel | MQ5-20 | 26.5 | 1.2 | very close |
| Valspar | Sharkfin | 4007-2A | 26 | 3.2 | noticeably different |
| PPG Paints | Chalky Blue | 1153-5 | 26 | 1.6 | very close |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Chiswell Blue (LRV 29.5) by LRV.
Lighter than Chiswell Blue
Darker than Chiswell Blue
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | CW-660 |
| Hex | #81929B |
| RGB | 129, 146, 155 |
| HSL | 201°, 12%, 56% |
| LRV (light reflectance value) | 29.5 |
| Lab L*, a*, b* | 59.5, -4.1, -6.8 |
| Undertone | Cool |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Chiswell Blue (BM CW-660), published as #81929B
#6F8999
#939C9B
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Benjamin Moore
More from Benjamin Moore
Common questions
- What is the LRV of Chiswell Blue (BM CW-660)?
- Chiswell Blue has an LRV of 29.5. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Chiswell Blue is a deep color.
- What is the closest match to Chiswell Blue in another brand?
- Cold Steel (Behr MQ5-20) from Behr, at a deltaE of 1.2 (very close).
- Is Chiswell Blue warm or cool?
- Benjamin Moore lists Chiswell Blue as cool, with a Cool undertone. Its Lab b* value is -6.8; 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.