London Clay vs Library Pewter
Where London Clay belongs to Farrow & Ball's range, Library Pewter is a Sherwin-Williams color. Hue-wise, London Clay belongs to the grey family and Library Pewter to the greige-grey family. They have nearly identical light reflectance values (15 vs 17), so they'll read as similarly Dark in most lighting conditions. Both lean warm, so they'll behave similarly in mixed or changing light conditions. The ΔE 6.1 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
London Clay vs Library Pewter in Real Spaces
1 real room side by side. London Clay and Library Pewter are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
London Clay vs Library Pewter Simulated Comparison
5 simulated room previews — drag the slider on each to see London Clay on one side and Library Pewter 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 London Clay comparisons
See how London Clay stacks up against other well-photographed colors across different brands and tones.
