Ammonite vs Perfect Periwinkle
Ammonite is a Farrow & Ball color while Perfect Periwinkle comes from Sherwin-Williams. Hue-wise, Ammonite belongs to the beige-greige family and Perfect Periwinkle to the blue family. At LRV 69 vs 23, Ammonite will read as the brighter of the two — a 46-point gap that matters most in north-facing or low-light rooms. The tonal difference — Ammonite's warm character against Perfect Periwinkle's cool — becomes most visible against white trim or in morning light. At ΔE 43.7, 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
Ammonite vs Perfect Periwinkle Simulated Comparison
5 simulated room previews — drag the slider on each to see Ammonite on one side and Perfect Periwinkle 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 Ammonite comparisons
See how Ammonite stacks up against other well-photographed colors across different brands and tones.
