Keystone Gray vs Sea Mariner
Both from Sherwin-Williams's palette. Keystone Gray reads as greige-grey, while Sea Mariner reads as blue-grey — two distinct hue families, not close cousins. Keystone Gray (LRV 29) reflects noticeably more light than Sea Mariner (LRV 7), a difference of 23 points that becomes especially apparent in rooms with limited natural light. Keystone Gray runs warm while Sea Mariner is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 34.1, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Keystone Gray vs Sea Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see Keystone Gray on one side and Sea Mariner 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 Keystone Gray comparisons
See how Keystone Gray stacks up against other well-photographed colors across different brands and tones.
