Dusky Blue (BM 1640)
Illustrative room. Screen colors vary; test a sample before you paint.
Dusky Blue (BM 1640) is a light, neutral blue from Benjamin Moore: LRV 60.8, so it reflects about 61 percent of the light that hits it.
Colors that go with Dusky Blue
Four Benjamin Moore colors picked for Dusky 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 Dusky 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 | Little Boy Blu | SW 9054 | 67 | 2.1 | very close |
| Behr | Cloudy Day | 540E-2 | 59.5 | 1.2 | very close |
| Valspar | Schoolboy Blue | 4007-5B | 61 | 2.3 | noticeably different |
| PPG Paints | Scandinavian Sky | 1149-3 | 63 | 1.3 | very close |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Dusky Blue (LRV 60.8) by LRV.
Lighter than Dusky Blue
Darker than Dusky Blue
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | 1640 |
| Hex | #BDD1D4 |
| RGB | 189, 209, 212 |
| HSL | 188°, 21%, 79% |
| LRV (light reflectance value) | 60.8 |
| Lab L*, a*, b* | 82.5, -6.1, -3.8 |
| Undertone | Cool |
| Temperature | neutral |
| Color family | Blue |
Same paint, two kinds of light
Dusky Blue (BM 1640), published as #BDD1D4
#AAC7D2
#D0DBD4
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 Dusky Blue (BM 1640)?
- Dusky Blue has an LRV of 60.8. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Dusky Blue is a light color.
- What is the closest match to Dusky Blue in another brand?
- Cloudy Day (Behr 540E-2) from Behr, at a deltaE of 1.2 (very close).
- Is Dusky Blue warm or cool?
- Benjamin Moore lists Dusky Blue as neutral, with a Cool undertone. Its Lab b* value is -3.8; 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.