Ambler Slate vs Grey Blue
Ambler Slate is a Benjamin Moore color while Grey Blue comes from RAL Classic. Ambler Slate reads as grey, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. At LRV 12 vs 7, Ambler Slate will read as the brighter of the two — a 4-point gap that matters most in north-facing or low-light rooms. At ΔE 8.1, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Ambler Slate vs Grey Blue in Real Spaces
2 real rooms side by side. Ambler Slate and Grey Blue are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The brightness difference is modest but present — Ambler Slate gives the walls a little more lift.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. Ambler Slate has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Ambler Slate vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Ambler Slate 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 Ambler Slate comparisons
See how Ambler Slate stacks up against other well-photographed colors across different brands and tones.
