Bedrock vs Sea Mariner
Bedrock and Sea Mariner come from the same Sherwin-Williams collection. Hue-wise, Bedrock belongs to the grey family and Sea Mariner to the blue-grey family. The 27-point LRV gap — 34 for Bedrock vs 7 for Sea Mariner — means Bedrock will open up a space more effectively. Where Bedrock leans neutral, Sea Mariner reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 34.7 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Bedrock vs Sea Mariner in Real Spaces
1 real room side by side. Seeing Bedrock and Sea Mariner in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Mudroom
In a hardworking space like a mudroom, the depth and warmth of a color reads differently than in a quieter room. The LRV gap is large enough that Bedrock will make the room feel meaningfully brighter than Sea Mariner would.
Color Details
Bedrock vs Sea Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see Bedrock 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.