Sea Star vs Grey Blue
Sea Star (Benjamin Moore) and Grey Blue (RAL Classic) come from different manufacturers. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. The 26-point LRV gap — 33 for Sea Star vs 7 for Grey Blue — means Sea Star will open up a space more effectively. A ΔE of 32.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Sea Star vs Grey Blue in Real Spaces
2 real rooms side by side. Seeing Sea Star and Grey Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Sea Star returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Sea Star returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Sea Star vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Sea Star on one side and Grey Blue 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 Sea Star comparisons
See how Sea Star stacks up against other well-photographed colors across different brands and tones.
