Blue Diamond vs Purbeck Stone
Where Blue Diamond belongs to Benjamin Moore's range, Purbeck Stone is a Farrow & Ball color. Blue Diamond reads as blue, while Purbeck Stone reads as greige-grey — two distinct hue families, not close cousins. Blue Diamond (LRV 69) reflects noticeably more light than Purbeck Stone (LRV 52), a difference of 17 points that becomes especially apparent in rooms with limited natural light. Blue Diamond runs blue while Purbeck Stone is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 20.3, 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
Blue Diamond vs Purbeck Stone Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Diamond on one side and Purbeck Stone 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 Blue Diamond comparisons
See how Blue Diamond stacks up against other well-photographed colors across different brands and tones.
