Clean Slate vs Sea Mariner
Both from Sherwin-Williams's palette. Hue-wise, Clean Slate belongs to the blue-green family and Sea Mariner to the blue-grey family. Clean Slate (LRV 76) reflects noticeably more light than Sea Mariner (LRV 7), a difference of 70 points that becomes especially apparent in rooms with limited natural light. Clean Slate runs neutral while Sea Mariner is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 59.2, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Clean Slate vs Sea Mariner in Real Spaces
1 real room side by side. Seeing Clean Slate 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
Mudrooms are seen in passing, often under whatever light comes through the door — a context that favors colors with some depth. Clean Slate returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Clean Slate vs Sea Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see Clean Slate 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.