Paint · Sherwin-Williams · Blues

Sherwin-Williams Sea Mariner

SW 9640 · #434A54 · LRV 6.7

Compare with other brands: Benjamin Moore Hale Navy is a 98% match

Sea Mariner (SW 9640) is a deep blue from Sherwin-Williams with no strong undertone. Its LRV is about 6.7 (very dark): it absorbs almost all light for a dramatic, enveloping look. plan for good artificial lighting. The closest match in another brand is Benjamin Moore Hale Navy (98% match).

Compare Sea Mariner with other brands

Three catalogs stay in the list — tap another card to swap the last column. Matches are estimates from digital values, not official conversions. Always check a real sample.

LRV

6.7 · Very dark

Undertone

None (neutral)

Temperature

Cool

Code

SW 9640

HEX

#434A54

RGB

67, 74, 84

HSL

215°, 11%, 30%

Family

Blues

Colors similar to Sea Mariner in Sherwin-Williams

Neighboring tones from the same fan deck, if you want a shade lighter, darker, warmer, or cooler.

Sea Mariner FAQ

What undertone does Sea Mariner have?

Sea Mariner has no strong undertone: it reads as a deep blue. Its color temperature is cool. This is estimated from the digital color values; north-facing light pulls undertones cooler and warm bulbs pull them warmer, so check a real sample on your wall.

What is the LRV of Sea Mariner?

Sea Mariner has an LRV (Light Reflectance Value) of about 6.7 on a 0–100 scale, which is very dark. It absorbs almost all light for a dramatic, enveloping look. Plan for good artificial lighting.

What is the closest match to Sea Mariner in other brands?

Benjamin Moore: Hale Navy (HC-154), 98%; Dunn-Edwards: Deepest Sea (DE5825), 97%; Valspar: Rogue Blue (5009-2), 96%; Behr: Starless Night (PPU14-20), 95%; PPG: Hatteras Gray (PPG10-10), 95%; Farrow & Ball: Hague Blue (No. 30), 94%; Glidden: Cavalry (PPG1041-7), 93%; HGTV Home by Sherwin-Williams: Cyberspace (HGSW7076), 93%. Matches are estimated from digital color values and are not official conversions; always compare a real sample of both.

What is the HEX code of Sea Mariner?

The HEX code of Sea Mariner (SW 9640) is #434A54, RGB 67, 74, 84. Use it for digital mockups; painted color will vary with light and sheen.