Bellbottom Blues (BM CSP-655)
Illustrative room. Screen colors vary; test a sample before you paint.
Bellbottom Blues (BM CSP-655) is a very deep, cool blue from Benjamin Moore: LRV 15.5, so it reflects about 15 percent of the light that hits it.
Colors that go with Bellbottom Blues
Four Benjamin Moore colors picked for Bellbottom Blues 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 Bellbottom Blues, 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 | Down Pour | SW 6516 | 15 | 3.2 | noticeably different |
| Behr | Sojourn Blue | M500-5 | 14.4 | 2.2 | very close |
| Valspar | Photogenic | 5010-10 | 15 | 3.9 | noticeably different |
| PPG Paints | Blue Oasis | 1158-6 | 14 | 2.0 | very close |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Bellbottom Blues (LRV 15.5) by LRV.
Lighter than Bellbottom Blues
Darker than Bellbottom Blues
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | CSP-655 |
| Hex | #386B8C |
| RGB | 56, 107, 140 |
| HSL | 204°, 43%, 38% |
| LRV (light reflectance value) | 15.5 |
| Lab L*, a*, b* | 43.1, -6.7, -23.3 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Bellbottom Blues (BM CSP-655), published as #386B8C
#14628A
#51748C
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 Bellbottom Blues (BM CSP-655)?
- Bellbottom Blues has an LRV of 15.5. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Bellbottom Blues is a very deep color.
- What is the closest match to Bellbottom Blues in another brand?
- Blue Oasis (PPG 1158-6) from PPG Paints, at a deltaE of 2.0 (very close).
- Is Bellbottom Blues warm or cool?
- Benjamin Moore lists Bellbottom Blues as cool, with a Cool Blue undertone. Its Lab b* value is -23.3; 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.