Dark Harbor (BM CSP-720)
Illustrative room. Screen colors vary; test a sample before you paint.
Dark Harbor (BM CSP-720) is a very deep, cool blue from Benjamin Moore: LRV 7.7, so it reflects about 8 percent of the light that hits it.
Colors that go with Dark Harbor
Three Benjamin Moore colors picked for Dark Harbor 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 Dark Harbor, 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 | Moscow Midnight | SW 9142 | 5 | 2.8 | noticeably different |
| Behr | Ocean Abyss | MQ6-01 | 7.9 | 4.9 | noticeably different |
| Valspar | Classic Teal | 5011-8 | 9 | 6.4 | clearly different |
| PPG Paints | Deep Emerald | 1148-7 | 8 | 3.9 | noticeably different |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Dark Harbor (LRV 7.7) by LRV.
Lighter than Dark Harbor
Darker than Dark Harbor
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | CSP-720 |
| Hex | #1E4850 |
| RGB | 30, 72, 80 |
| HSL | 190°, 45%, 22% |
| LRV (light reflectance value) | 7.7 |
| Lab L*, a*, b* | 28.1, -11.9, -9.2 |
| Undertone | Cool |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Dark Harbor (BM CSP-720), published as #1E4850
#00404E
#345150
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
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Common questions
- What is the LRV of Dark Harbor (BM CSP-720)?
- Dark Harbor has an LRV of 7.7. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Dark Harbor is a very deep color.
- What is the closest match to Dark Harbor in another brand?
- Moscow Midnight (SW 9142) from Sherwin-Williams, at a deltaE of 2.8 (noticeably different).
- Is Dark Harbor warm or cool?
- Benjamin Moore lists Dark Harbor as cool, with a Cool undertone. Its Lab b* value is -9.2; 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.