Stratford Blue (BM 831)
Illustrative room. Screen colors vary; test a sample before you paint.
Stratford Blue (BM 831) is a deep, cool blue from Benjamin Moore: LRV 25.1, so it reflects about 25 percent of the light that hits it.
Colors that go with Stratford Blue
Four Benjamin Moore colors picked for Stratford 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 Stratford 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 | Searching Blue | SW 6536 | 21 | 3.1 | noticeably different |
| Behr | Lead Cast | MQ5-52 | 21 | 2.9 | noticeably different |
| Valspar | Guest Blue | 4003-6B | 23 | 1.0 | indistinguishable |
| PPG Paints | Evening Hush | 1165-5 | 26 | 2.5 | noticeably different |
Lighter and darker in Benjamin Moore
The Benjamin Moore blue colors nearest to Stratford Blue (LRV 25.1) by LRV.
Lighter than Stratford Blue
Darker than Stratford Blue
Color data
| Brand | Benjamin Moore |
|---|---|
| Color code | 831 |
| Hex | #7685A1 |
| RGB | 118, 133, 161 |
| HSL | 219°, 19%, 55% |
| LRV (light reflectance value) | 25.1 |
| Lab L*, a*, b* | 55.3, 1.1, -16.7 |
| Undertone | Cool Blue |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Stratford Blue (BM 831), published as #7685A1
#637C9F
#898EA1
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 Stratford Blue (BM 831)?
- Stratford Blue has an LRV of 25.1. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Stratford Blue is a deep color.
- What is the closest match to Stratford Blue in another brand?
- Guest Blue (Valspar 4003-6B) from Valspar, at a deltaE of 1.0 (indistinguishable).
- Is Stratford Blue warm or cool?
- Benjamin Moore lists Stratford Blue as cool, with a Cool Blue undertone. Its Lab b* value is -16.7; 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.