River Rock (BM 2139-10)
Illustrative room. Screen colors vary; test a sample before you paint.
River Rock (BM 2139-10) is a very deep, warm black from Benjamin Moore: LRV 6.6, so it reflects about 7 percent of the light that hits it.
Colors that go with River Rock
Four Benjamin Moore colors picked for River Rock by this site's color math: a trim white, a deeper black, 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 River Rock, 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 | Andiron | SW 6174 | 5 | 2.6 | noticeably different |
| Behr | Olive Leaf | S-H-760 | 7.4 | 4.0 | noticeably different |
| Valspar | Olive Suede | 6010-3 | 8 | 5.1 | clearly different |
| PPG Paints | Licorice | 1009-7 | 8 | 6.3 | clearly different |
Lighter and darker in Benjamin Moore
The Benjamin Moore black colors nearest to River Rock (LRV 6.6) by LRV.
Lighter than River Rock
Darker than River Rock
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | 2139-10 |
| Hex | #464233 |
| RGB | 70, 66, 51 |
| HSL | 47°, 16%, 24% |
| LRV (light reflectance value) | 6.6 |
| Lab L*, a*, b* | 28.0, -1.2, 9.8 |
| Undertone | Neutral |
| Temperature | warm |
| Color family | Black |
Same paint, two kinds of light
River Rock (BM 2139-10), published as #464233
#393A32
#544A32
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 River Rock (BM 2139-10)?
- River Rock has an LRV of 6.6. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so River Rock is a very deep color.
- What is the closest match to River Rock in another brand?
- Andiron (SW 6174) from Sherwin-Williams, at a deltaE of 2.6 (noticeably different).
- Is River Rock warm or cool?
- Benjamin Moore lists River Rock as warm, with a Neutral undertone. Its Lab b* value is 9.8; 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.