Britannia Blue (BM 1623)
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Britannia Blue (BM 1623) is a very deep, cool gray from Benjamin Moore: LRV 18.1, so it reflects about 18 percent of the light that hits it.
Colors that go with Britannia Blue
Four Benjamin Moore colors picked for Britannia Blue by this site's color math: a trim white, a deeper gray, 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 Britannia 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 | Wall Street | SW 7665 | 15 | 2.8 | noticeably different |
| Behr | Hypnotic | MQ5-19 | 17.8 | 2.1 | very close |
| Valspar | Smoky Pitch | 4007-4B | 15 | 2.3 | very close |
| PPG Paints | Sheffield Gray | 1041-6 | 18 | 1.5 | very close |
Lighter and darker in Benjamin Moore
The Benjamin Moore gray colors nearest to Britannia Blue (LRV 18.1) by LRV.
Lighter than Britannia Blue
Darker than Britannia Blue
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | 1623 |
| Hex | #67737C |
| RGB | 103, 115, 124 |
| HSL | 206°, 9%, 45% |
| LRV (light reflectance value) | 18.1 |
| Lab L*, a*, b* | 47.8, -2.4, -6.5 |
| Undertone | Cool |
| Temperature | cool |
| Color family | Gray |
Same paint, two kinds of light
Britannia Blue (BM 1623), published as #67737C
#566A7A
#787C7C
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 Britannia Blue (BM 1623)?
- Britannia Blue has an LRV of 18.1. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Britannia Blue is a very deep color.
- What is the closest match to Britannia Blue in another brand?
- Sheffield Gray (PPG 1041-6) from PPG Paints, at a deltaE of 1.5 (very close).
- Is Britannia Blue warm or cool?
- Benjamin Moore lists Britannia Blue as cool, with a Cool undertone. Its Lab b* value is -6.5; 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.