Big Dipper vs Sea Mariner
Both from Sherwin-Williams's palette. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. They have nearly identical light reflectance values (6 vs 7), so they'll read as similarly Dark in most lighting conditions. Big Dipper runs neutral while Sea Mariner is decidedly cool, which means they'll respond very differently to warm vs cool light sources. The ΔE 5.2 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Big Dipper vs Sea Mariner Simulated Comparison
5 simulated room previews — drag the slider on each to see Big Dipper 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 Big Dipper comparisons
See how Big Dipper stacks up against other well-photographed colors across different brands and tones.
