Gray Mountain vs London Clay
Where Gray Mountain belongs to Benjamin Moore's range, London Clay is a Farrow & Ball color. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. Gray Mountain (LRV 19) reflects noticeably more light than London Clay (LRV 15), a difference of 3 points that becomes especially apparent in rooms with limited natural light. Gray Mountain runs red while London Clay is decidedly warm, which means they'll respond very differently to warm vs cool light sources. The ΔE 5.5 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Gray Mountain vs London Clay Simulated Comparison
5 simulated room previews — drag the slider on each to see Gray Mountain on one side and London Clay 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 Gray Mountain comparisons
See how Gray Mountain stacks up against other well-photographed colors across different brands and tones.
