Dark Harbor vs Grey Blue
Dark Harbor (Benjamin Moore) and Grey Blue (RAL Classic) come from different manufacturers. Hue-wise, Dark Harbor belongs to the blue family and Grey Blue to the blue-grey family. Their light reflectance values are nearly the same — 8 vs 7 — so neither will read significantly brighter or darker than the other. A ΔE of 12.8 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.
Dark Harbor vs Grey Blue in Real Spaces
1 real room side by side. Seeing Dark Harbor 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.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.
Color Details
Dark Harbor vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Dark Harbor 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 Dark Harbor comparisons
See how Dark Harbor stacks up against other well-photographed colors across different brands and tones.
