Black Knight vs Grey Blue
Black Knight (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 3-point LRV gap — 7 for Grey Blue vs 5 for Black Knight — means Grey Blue will open up a space more effectively. A ΔE of 11.9 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Black Knight vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Black Knight 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 Black Knight comparisons
See how Black Knight stacks up against other well-photographed colors across different brands and tones.
