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Sea Mariner SW 9640
On-screen approximation from the published RGB value. Order a physical sample before you decide.
Undertone: Noticeable blue undertone
In CIELAB, Sea Mariner sits at L* 31.2, a* -0.4, b* -6.9. Its hue angle is 267° and its chroma is 6.9, so it leans blue clearly enough to notice on a full wall. It classifies as cool. Among Sherwin-Williams colors with a similar LRV (±5), it is warmer (more yellow) than 23%.
LRV 6.7: very dark
Light Reflectance Value runs from 0 (absolute black) to 100 (perfect white). At 6.7, Sea Mariner is lighter than 6% of Sherwin-Williams colors. Near-black depth. Use on doors, trim, cabinetry, exteriors or moody rooms with strong artificial lighting.
Closest Benjamin Moore match to Sea Mariner
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Hale Navy | HC-154 | 0.63 | Practically identical | |
| Mysterious | AF-565 | 0.70 | Practically identical | |
| Gravel Gray | 2127-30 | 2.20 | Close — difference visible side by side |
Closest Behr match to Sea Mariner
Ranked by CIEDE2000 color difference (ΔE) computed from published RGB values. Below 2 is hard to tell apart on the wall; above 4 is a different color. Behr does not publish LRV, so Behr values here are estimates.
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Secret Society | MQ5-10 | 1.65 | Very close | |
| Stiletto | T11-2 | 1.68 | Very close | |
| Dark Night | PPF-58 | 1.72 | Very close |
Similar Sherwin-Williams colors
| Color | Code | ΔE2000 | How close | |
|---|---|---|---|---|
| Charcoal Blue | SW 2739 | 2.30 | Close — difference visible side by side | |
| Cyberspace | SW 7076 | 2.78 | Close — difference visible side by side | |
| Sea Serpent | SW 7615 | 3.16 | Close — difference visible side by side | |
| Tarragon | SW 9660 | 4.63 | Similar, clearly different | |
| Mineral Gray | SW 2740 | 4.80 | Similar, clearly different | |
| Mount Etna | SW 7625 | 4.86 | Similar, clearly different |
Lighter and darker versions
Colors from Sherwin-Williams with nearly the same hue and saturation, one step lighter or darker.
- Indigo Batik SW 7602 · lighter, LRV 7.6
- Mineral Gray SW 2740 · lighter, LRV 9.4
- Peppercorn SW 7674 · lighter, LRV 9.7
- Charcoal Blue SW 2739 · darker, LRV 5.7
- Gale Force SW 7605 · darker, LRV 5.6
- Mountain Fig SW 9690 · darker, LRV 4.5
Colors that go with Sea Mariner
Color-theory pairings — the nearest Sherwin-Williams color to each rotated hue, keeping the same lightness and saturation:
- Nocturne SW 9520 · complementary (180°)
- Tarragon SW 9660 · analogous (−30°)
- Quixotic Plum SW 6265 · analogous (+30°)
- Bitter Chocolate SW 6013 · triadic (120°)
- Olympic Range SW 7750 · triadic (240°)
Sea Mariner vs popular colors
- Hale Navy (Benjamin Moore HC-154, ΔE 0.6) is lighter (LRV 8.4 vs 6.7).
- Wrought Iron (Benjamin Moore 2124-10, ΔE 5.2) is about as light, more yellow/warm, more muted.
- Soot (Benjamin Moore 2129-20, ΔE 5.3) is about as light, more yellow/warm, more muted.