St. John Blue vs French Gray
Where St. John Blue belongs to Benjamin Moore's range, French Gray is a Farrow & Ball color. Hue-wise, St. John Blue belongs to the blue family and French Gray to the beige-greige family. French Gray (LRV 43) reflects noticeably more light than St. John Blue (LRV 34), a difference of 9 points that becomes especially apparent in rooms with limited natural light. St. John Blue runs blue while French Gray is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 21.6, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
St. John Blue vs French Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see St. John Blue on one side and French Gray 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 St. John Blue comparisons
See how St. John Blue stacks up against other well-photographed colors across different brands and tones.
