Polished Slate vs Black grey
Where Polished Slate belongs to Benjamin Moore's range, Black grey is a RAL Classic color. Polished Slate reads as blue, while Black grey reads as blue-grey — two distinct hue families, not close cousins. Polished Slate (LRV 15) reflects noticeably more light than Black grey (LRV 6), a difference of 8 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 25.0, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Polished Slate vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Polished Slate 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 Polished Slate comparisons
See how Polished Slate stacks up against other well-photographed colors across different brands and tones.
