Polished Slate vs Ammonite
Polished Slate is a Benjamin Moore color while Ammonite comes from Farrow & Ball. Polished Slate reads as blue, while Ammonite reads as beige-greige — two distinct hue families, not close cousins. At LRV 69 vs 15, Ammonite will read as the brighter of the two — a 54-point gap that matters most in north-facing or low-light rooms. The tonal difference — Polished Slate's blue character against Ammonite's warm — becomes most visible against white trim or in morning light. At ΔE 45.3, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. 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 Ammonite Simulated Comparison
5 simulated room previews — drag the slider on each to see Polished Slate on one side and Ammonite 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.
