Harbor Fog vs Grey Blue
Harbor Fog (Benjamin Moore) and Grey Blue (RAL Classic) come from different manufacturers. Harbor Fog reads as blue, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. The 67-point LRV gap — 75 for Harbor Fog vs 7 for Grey Blue — means Harbor Fog will open up a space more effectively. A ΔE of 58.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Harbor Fog vs Grey Blue in Real Spaces
1 real room side by side. Seeing Harbor Fog 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.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Harbor Fog reflects noticeably more light off the walls, making the space read more open than Grey Blue.
Color Details
Harbor Fog vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Harbor Fog 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 Harbor Fog comparisons
See how Harbor Fog stacks up against other well-photographed colors across different brands and tones.
