Ambler Slate vs Basalt grey
Ambler Slate (Benjamin Moore) and Basalt grey (RAL Classic) come from different manufacturers. These are both greys, so the question isn't which hue to choose — it's where within grey to land. Their light reflectance values are nearly the same — 12 vs 14 — so neither will read significantly brighter or darker than the other. A ΔE of 2.1 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
Ambler Slate vs Basalt grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Ambler Slate on one side and Basalt 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 Ambler Slate comparisons
See how Ambler Slate stacks up against other well-photographed colors across different brands and tones.








































