Grey Heron vs Sea Mariner
Grey Heron and Sea Mariner come from the same Sherwin-Williams collection. Grey Heron reads as greige-grey, while Sea Mariner reads as blue-grey — two distinct hue families, not close cousins. The 58-point LRV gap — 65 for Grey Heron vs 7 for Sea Mariner — means Grey Heron will open up a space more effectively. Where Grey Heron leans warm, Sea Mariner reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 54.3 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Grey Heron vs Sea Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see Grey Heron 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 Grey Heron comparisons
See how Grey Heron stacks up against other well-photographed colors across different brands and tones.
