Ammonite vs Signal blue
Ammonite (Farrow & Ball) and Signal blue (RAL Classic) come from different manufacturers. Hue-wise, Ammonite belongs to the beige-greige family and Signal blue to the blue family. The 59-point LRV gap — 69 for Ammonite vs 10 for Signal blue — means Ammonite will open up a space more effectively. A ΔE of 66.1 puts these firmly in different territory — two distinct design choices rather than close alternatives. 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 Signal blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Ammonite on one side and Signal 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 Ammonite comparisons
See how Ammonite stacks up against other well-photographed colors across different brands and tones.
