Cook's Blue vs Purbeck Stone
Both from Farrow & Ball's palette. Hue-wise, Cook's Blue belongs to the blue family and Purbeck Stone to the greige-grey family. Purbeck Stone (LRV 52) reflects noticeably more light than Cook's Blue (LRV 25), a difference of 27 points that becomes especially apparent in rooms with limited natural light. Cook's Blue runs cool while Purbeck Stone is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 34.6, 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 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cook's Blue vs Purbeck Stone in Real Spaces
5 real rooms side by side. Seeing Cook's Blue and Purbeck Stone in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. The LRV gap is large enough that Purbeck Stone will make the room feel meaningfully brighter than Cook's Blue would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Purbeck Stone reflects noticeably more light off the walls, making the space read more open than Cook's Blue.
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. Purbeck Stone reflects noticeably more light off the walls, making the space read more open than Cook's Blue.
Home Office
The test for a home office color isn't how it looks in a quick glance — it's whether it still feels right after a full day of work. Purbeck Stone reflects noticeably more light off the walls, making the space read more open than Cook's Blue.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Purbeck Stone reflects noticeably more light off the walls, making the space read more open than Cook's Blue.
Color Details
Cook's Blue vs Purbeck Stone Simulated Comparison
5 simulated room previews — drag the slider on each to see Cook's Blue 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 Cook's Blue comparisons
See how Cook's Blue stacks up against other well-photographed colors across different brands and tones.
