Mineral Gray vs Sea Serpent paint color comparison

Mineral Gray vs Sea Serpent

Mineral Gray and Sea Serpent come from the same Sherwin-Williams collection. Mineral Gray reads as blue-grey, while Sea Serpent reads as blue — two distinct hue families, not close cousins. The 3-point LRV gap — 9 for Mineral Gray vs 7 for Sea Serpent — means Mineral Gray will open up a space more effectively. Both share a cool character, which means they'll respond to light and surrounding materials in similar ways. ΔE 6.7 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.

Mineral Gray vs Sea Serpent in Real Spaces

3 real rooms side by side. Mineral Gray 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.

Bathroom

Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.

Mineral GraySW Mineral Gray bathroom color review

@mandakate82

Sea SerpentSea Serpent Bathroom

@mybudgetrecipes

House

A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.

Mineral GraySW Mineral Gray house exterior color review

@stickells.painting

Sea SerpentSea Serpent House

@mybudgetrecipes

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. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.

Mineral GrayMineral gray painted cabinets

@artisan_millworks_co

Sea SerpentBlue cabinets Sherwin Williams Sea Serprent SW 7615 review

@refreshinglychic

Color Details

Mineral Gray
Sherwin-Williams · 2740
LRV9.4
BrandSherwin-Williams
Number2740
Undertone—
TemperatureCool
BrightnessDark
Sea Serpent
Sherwin-Williams · 7615
LRV6.7
BrandSherwin-Williams
Number7615
Undertone—
TemperatureCool
BrightnessDark

Mineral Gray vs Sea Serpent Simulated Comparison

5 simulated room previews — drag the slider on each to see Mineral Gray on one side and Sea Serpent on the other.

Bathroom
Bedroom
House
Kitchen Cabinets
Living Room

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.