Prussian Blue vs Black grey
Prussian Blue (Benjamin Moore) and Black grey (RAL Classic) come from different manufacturers. Hue-wise, Prussian Blue belongs to the blue family and Black grey to the blue-grey family. The 6-point LRV gap — 12 for Prussian Blue vs 6 for Black grey — means Prussian Blue will open up a space more effectively. A ΔE of 27.7 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.
Prussian Blue vs Black grey in Real Spaces
1 real room side by side. Seeing Prussian Blue and Black grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Prussian Blue reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Prussian Blue vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Prussian Blue on one side and Black 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 Prussian Blue comparisons
See how Prussian Blue stacks up against other well-photographed colors across different brands and tones.
