Blue Spa vs Black grey
Blue Spa (Benjamin Moore) and Black grey (RAL Classic) come from different manufacturers. Blue Spa reads as blue, while Black grey reads as blue-grey — two distinct hue families, not close cousins. The 23-point LRV gap — 29 for Blue Spa vs 6 for Black grey — means Blue Spa will open up a space more effectively. A ΔE of 46.9 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
Blue Spa vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Spa 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 Blue Spa comparisons
See how Blue Spa stacks up against other well-photographed colors across different brands and tones.
