Paint · Sherwin-Williams · Blues

Sherwin-Williams Sea Mariner

SW 9640 · #434A54 · LRV ~6.7

Closest tone in another brand: Benjamin Moore Hale Navy (~98% proximity)

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

Closest tone to Sea Mariner in other brands

Not the same paint: the closest name in each brand. Three brands stay in the list — tap another card to swap the last column.

LRV (estimated)

6.7 · Very dark

Undertone (estimated)

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 brand, 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, in this site’s digital reading. 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 estimated 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. It is an estimate from the digital HEX, not the LRV published by the brand.

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

Benjamin Moore: Hale Navy (HC-154), ~98% proximity; Dunn-Edwards: Deepest Sea (DE5825), ~97% proximity; Valspar: Rogue Blue (5009-2), ~96% proximity; Behr: Starless Night (PPU14-20), ~95% proximity; PPG: Hatteras Gray (PPG10-10), ~95% proximity; Farrow & Ball: Hague Blue (No. 30), ~94% proximity; Glidden: Cavalry (PPG1041-7), ~93% proximity; HGTV Home by Sherwin-Williams: Cyberspace (HGSW7076), ~93% proximity. These are estimates of digital closeness on screen, not proven physical equivalence or 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.