Portsmouth (SW 9644)
Illustrative room. Screen colors vary; test a sample before you paint.
Portsmouth (SW 9644) is a deep, neutral gray from Sherwin-Williams: LRV 22, so it reflects about 22 percent of the light that hits it.
Colors that go with Portsmouth
Four Sherwin-Williams colors picked for Portsmouth by this site's color math: a trim white, a deeper gray, a quiet contrast from another family, a dark accent. Sherwin-Williams did not choose these pairings.
Closest match in every other brand
Each brand's closest color to Portsmouth, 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 |
|---|---|---|---|---|---|
| Benjamin Moore | Apollo Blue | CW-645 | 23.7 | 0.6 | indistinguishable |
| Behr | Juniper Ash | PPU12-16 | 23.3 | 1.8 | very close |
| Valspar | Taiga Spruce | 5003-4B | 22 | 2.8 | noticeably different |
| PPG Paints | Thunderbolt | 10-06 | 23 | 2.0 | very close |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams gray colors nearest to Portsmouth (LRV 22) by LRV.
Lighter than Portsmouth
Darker than Portsmouth
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 9644 |
| Hex | #768482 |
| RGB | 118, 132, 130 |
| HSL | 171°, 6%, 49% |
| LRV (light reflectance value) | 22 |
| Lab L*, a*, b* | 54.0, -5.5, -0.7 |
| Undertone | Cool Green |
| Temperature | neutral |
| Color family | Gray |
Same paint, two kinds of light
Portsmouth (SW 9644), published as #768482
#657B80
#878D82
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Sherwin-Williams
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Common questions
- What is the LRV of Portsmouth (SW 9644)?
- Portsmouth has an LRV of 22. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Portsmouth is a deep color.
- What is the closest match to Portsmouth in another brand?
- Apollo Blue (BM CW-645) from Benjamin Moore, at a deltaE of 0.6 (indistinguishable).
- Is Portsmouth warm or cool?
- Sherwin-Williams lists Portsmouth as neutral, with a Cool Green undertone. Its Lab b* value is -0.7; 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.