Sea Mariner vs Sea Serpent
Sea Mariner and Sea Serpent come from the same Sherwin-Williams collection. Hue-wise, Sea Mariner belongs to the blue-grey family and Sea Serpent to the blue family. Their light reflectance values are nearly the same — 7 vs 7 — so neither will read significantly brighter or darker than the other. Both share a cool character, which means they'll respond to light and surrounding materials in similar ways. A ΔE of 2.5 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Sea Mariner vs Sea Serpent in Real Spaces
2 real rooms side by side. Sea Mariner and Sea Serpent are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Mudroom
In a hardworking space like a mudroom, the depth and warmth of a color reads differently than in a quieter room. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Color Details
Sea Mariner vs Sea Serpent Simulated Comparison
5 simulated room previews — drag the slider on each to see Sea Mariner on one side and Sea Serpent on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Sea Mariner comparisons
See how Sea Mariner stacks up against other well-photographed colors across different brands and tones.
