Sea Serpent (SW 7615)
Illustrative room. Screen colors vary; test a sample before you paint.
Sea Serpent (SW 7615) is a very deep, cool blue from Sherwin-Williams: LRV 7, so it reflects about 7 percent of the light that hits it.
Colors that go with Sea Serpent
Three Sherwin-Williams colors picked for Sea Serpent by this site's color math: a trim white, 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 Sea Serpent, 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 | Blue Note | 2129-30 | 9 | 0.9 | indistinguishable |
| Behr | Club Navy | QE-56 | 6.6 | 0.9 | indistinguishable |
| Valspar | Pitch Cobalt | 5010-2 | 7 | 1.6 | very close |
| PPG Paints | Midnight Hour | 1038-7 | 6 | 1.6 | very close |
Lighter and darker in Sherwin-Williams
The Sherwin-Williams blue colors nearest to Sea Serpent (LRV 7) by LRV.
Lighter than Sea Serpent
Darker than Sea Serpent
Color data
| Brand | Sherwin-Williams |
|---|---|
| Color code | SW 7615 |
| Hex | #3E4B54 |
| RGB | 62, 75, 84 |
| HSL | 205°, 15%, 29% |
| LRV (light reflectance value) | 7 |
| Lab L*, a*, b* | 31.1, -2.8, -7.0 |
| Undertone | Cool |
| Temperature | cool |
| Color family | Blue |
Same paint, two kinds of light
Sea Serpent (SW 7615), published as #3E4B54
#2D4352
#4F5454
These swatches and the rooms above are a simulation, not a measurement. How the visualizer works
Similar shades from Sherwin-Williams
Comparisons that include Sea Serpent (SW 7615)
More from Sherwin-Williams
Common questions
- What is the LRV of Sea Serpent (SW 7615)?
- Sea Serpent has an LRV of 7. LRV runs from 0 (black) to 100 (pure white) and measures the share of light a surface reflects, so Sea Serpent is a very deep color.
- What is the closest match to Sea Serpent in another brand?
- Blue Note (BM 2129-30) from Benjamin Moore, at a deltaE of 0.9 (indistinguishable).
- Is Sea Serpent warm or cool?
- Sherwin-Williams lists Sea Serpent as cool, with a Cool undertone. Its Lab b* value is -7.0; 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.