Ammonite vs Rookwood Sash Green
Where Ammonite belongs to Farrow & Ball's range, Rookwood Sash Green is a Sherwin-Williams color. Ammonite reads as beige-greige, while Rookwood Sash Green reads as blue-green — two distinct hue families, not close cousins. Ammonite (LRV 69) reflects noticeably more light than Rookwood Sash Green (LRV 13), a difference of 56 points that becomes especially apparent in rooms with limited natural light. Ammonite runs warm while Rookwood Sash Green is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 45.4, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Ammonite vs Rookwood Sash Green in Real Spaces
3 real rooms side by side. Seeing Ammonite and Rookwood Sash Green in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Ammonite reflects noticeably more light off the walls, making the space read more open than Rookwood Sash Green.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Ammonite reflects noticeably more light off the walls, making the space read more open than Rookwood Sash Green.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Ammonite reflects noticeably more light off the walls, making the space read more open than Rookwood Sash Green.
Color Details
Ammonite vs Rookwood Sash Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Ammonite on one side and Rookwood Sash Green 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.
