Sea Mariner 9640 is a neutral paint color from Sherwin-Williams. It has a hex value of #434A54, LRV 7 and a neutral undertone. Its closest cross-brand match is Hale Navy from Benjamin Moore (nearly identical), with 49 more equivalents across other brands.
Ref. #434A54 · 9640
Sea Mariner
7%LRV Value
NeutralUndertone
Sea Mariner Technical Profile
Use this color
Get this color
Some sample and supply links are affiliate links — if you buy through them, Paint Color HQ may earn a small commission at no extra cost to you. It helps keep the site free.
Sea Mariner in Every Brand
The closest equivalent to Sea Mariner in each major paint brand, ranked by how close the match reads. Always verify with a physical sample. How we calculate match accuracy →
Sherwin-WilliamsSea Mariner
Nearly identical
Benjamin MooreHale Navy
Hale Navy
Benjamin Moore
Nearly identical
Royal Navy
Valspar
Nearly identical
Deepest Sea
Dunn-Edwards
Nearly identical
Stiletto
Behr
Nearly identical
Slate Grey
RAL
Nearly identical
Prussian Blue
Kilz
Nearly identical
Cavalry
PPG
Very similar
Anchored Blue
Dutch Boy
Very similar
Vermont Slate
Vista Paint
Very similar
Railings
Farrow & Ball
Very similar
Vermont Slate
Hirshfield's
Very similar
Seeing a close call? Order a peel-and-stick sample of Sea Mariner — or sample it next to its top matches — Samplize buy 8 peel-and-stick samples, get 2 free.
Recommended Pairings
Colors That Work With Sea Mariner
Timeless pairing with clean white trim and a tonal accent wall
Side Walls
Sea Mariner
#434A54
Accent Wall
Tonal Shift
A warm shift that adds depth without clashing.
#545179
Trim & Molding
Pure White
Crisp white trim for a clean, traditional look.
#FFFFFF
Color Palettes for Sea Mariner
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Sea Mariner Room Palettes
Color schemes built around this color — each swatch links to the closest matching paint.
Warm & Inviting
Warm tones with cozy appeal — welcoming and comfortable
Cool & Calm
Cool hues with soft contrast — serene and restful
Bold Contrast
Complementary hues with punch — dynamic and striking
Similar Sherwin-Williams Colors
Other Sherwin-Williams colors close to Sea Mariner.
More neutral colors from other brands
Cross-brand colors in the neutral family — useful when you want a similar look from a different brand.
Sea Mariner — Frequently Asked Questions
What undertone does Sea Mariner have?
Sea Mariner by Sherwin-Williams has a neutral undertone and sits in the neutral color family. The undertone shifts with light — warmer under 2700K bulbs, cleaner and cooler under 4000K daylight — so sample Sea Mariner in your own space before committing.
What colors match Sea Mariner from other brands?
The closest cross-brand equivalents to Sea Mariner are Hale Navy by Benjamin Moore (a near-identical match), Royal Navy by Valspar (a near-identical match), Mysterious by Benjamin Moore (a near-identical match) — the best options for getting Sea Mariner's look from a brand your local store carries. Confirm with a physical sample, since sheen and lighting shift the final result.
What is the LRV of Sea Mariner?
Sea Mariner has a Light Reflectance Value (LRV) of 6.7, on a scale where 0 is pure black and 100 is pure white — that makes it a deep, dramatic color best saved for accent walls, dining rooms, and cozy spaces where atmosphere matters more than reflected light.
Explore More with Sea Mariner
Related Reading
How to Match Paint Colors Across Brands
The science behind Delta E and CIEDE2000 — find a Behr equivalent of any Sherwin-Williams shade, or a Benjamin Moore alternative when your store is out of stock.
Understanding Paint Color Undertones
Why Sea Mariner's neutral undertone matters more than its surface color — and how to read undertones in any paint chip.