Black Knight vs RAL 790-3
Black Knight (Benjamin Moore) and RAL 790-3 (RAL Effect) 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. Their light reflectance values are nearly the same — 5 vs 4 — so neither will read significantly brighter or darker than the other. A ΔE of 1.5 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. 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 RAL 790-3 Simulated Comparison
5 simulated room previews — drag the slider on each to see Black Knight on one side and RAL 790-3 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.








































