Plum Martini (BM CSP-540)
Illustrative room. Screen colors vary; test a sample before you paint.
Plum Martini (BM CSP-540) is a very deep, neutral black from Benjamin Moore: LRV 6.9, so it reflects about 7 percent of the light that hits it.
Colors that go with Plum Martini
Three Benjamin Moore colors picked for Plum Martini 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 Plum Martini, 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 | Darkroom | SW 7083 | 5 | 1.4 | very close |
| Behr | Spade Black | BNC-38 | 5.3 | 2.8 | noticeably different |
| Valspar | Dark Kettle Black | 4011-2 | 5 | 3.2 | noticeably different |
| PPG Paints | Black Magic | 1001-7 | 5 | 3.1 | noticeably different |
Lighter and darker in Benjamin Moore
The Benjamin Moore black colors nearest to Plum Martini (LRV 6.9) by LRV.
Lighter than Plum Martini
Darker than Plum Martini
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | CSP-540 |
| Hex | #403C3F |
| RGB | 64, 60, 63 |
| HSL | 315°, 3%, 24% |
| LRV (light reflectance value) | 6.9 |
| Lab L*, a*, b* | 25.8, 2.4, -1.2 |
| Undertone | Neutral |
| Temperature | neutral |
| Color family | Black |
Same paint, two kinds of light
Plum Martini (BM CSP-540), published as #403C3F
#32343D
#4E443F
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 Plum Martini (BM CSP-540)?
- Plum Martini has an LRV of 6.9. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Plum Martini is a very deep color.
- What is the closest match to Plum Martini in another brand?
- Darkroom (SW 7083) from Sherwin-Williams, at a deltaE of 1.4 (very close).
- Is Plum Martini warm or cool?
- Benjamin Moore lists Plum Martini as neutral, with a Neutral undertone. Its Lab b* value is -1.2; 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.