Apollo Blue (BM CW-645)
Illustrative room. Screen colors vary; test a sample before you paint.
Apollo Blue (BM CW-645) is a deep, neutral gray from Benjamin Moore: LRV 23.7, so it reflects about 24 percent of the light that hits it.
Colors that go with Apollo Blue
Four Benjamin Moore colors picked for Apollo 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 Apollo 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 | Portsmouth | SW 9644 | 22 | 0.6 | indistinguishable |
| Behr | Nature Retreat | 730F-5 | 23.3 | 1.7 | very close |
| Valspar | Coastal Dusk | 5002-2B | 20 | 2.9 | noticeably different |
| PPG Paints | Rough Ride | 1036-5 | 23 | 1.8 | very close |
Lighter and darker in Benjamin Moore
The Benjamin Moore gray colors nearest to Apollo Blue (LRV 23.7) by LRV.
Lighter than Apollo Blue
Darker than Apollo Blue
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | CW-645 |
| Hex | #768483 |
| RGB | 118, 132, 131 |
| HSL | 176°, 6%, 49% |
| LRV (light reflectance value) | 23.7 |
| Lab L*, a*, b* | 54.0, -5.3, -1.2 |
| Undertone | Cool Green |
| Temperature | neutral |
| Color family | Gray |
Same paint, two kinds of light
Apollo Blue (BM CW-645), published as #768483
#657B81
#878D83
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 Apollo Blue (BM CW-645)?
- Apollo Blue has an LRV of 23.7. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Apollo Blue is a deep color.
- What is the closest match to Apollo Blue in another brand?
- Portsmouth (SW 9644) from Sherwin-Williams, at a deltaE of 0.6 (indistinguishable).
- Is Apollo Blue warm or cool?
- Benjamin Moore lists Apollo Blue as neutral, with a Cool Green 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.