Gossamer Blue vs Coastal Grey
Gossamer Blue (Benjamin Moore) and Coastal Grey (Dulux) come from different manufacturers. Gossamer Blue reads as blue, while Coastal Grey reads as blue-grey — two distinct hue families, not close cousins. Their light reflectance values are nearly the same — 55 vs 56 — so neither will read significantly brighter or darker than the other. Where Gossamer Blue leans blue, Coastal Grey reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. ΔE 3.5 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Gossamer Blue vs Coastal Grey in Real Spaces
2 real rooms side by side. Gossamer Blue and Coastal Grey are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. The distinction reads clearly at room scale, making the choice between them concrete.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
Gossamer Blue vs Coastal Grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Gossamer Blue on one side and Coastal Grey 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 Gossamer Blue comparisons
See how Gossamer Blue stacks up against other well-photographed colors across different brands and tones.
