Lulworth Blue vs Mouse's Back
Both from Farrow & Ball's palette. Hue-wise, Lulworth Blue belongs to the blue family and Mouse's Back to the beige-greige family. Lulworth Blue (LRV 45) reflects noticeably more light than Mouse's Back (LRV 26), a difference of 19 points that becomes especially apparent in rooms with limited natural light. Lulworth Blue runs cool while Mouse's Back is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 29.5, 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 6 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Lulworth Blue vs Mouse's Back in Real Spaces
6 real rooms side by side. Seeing Lulworth Blue and Mouse's Back 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 Lulworth Blue will make the room feel meaningfully brighter than Mouse's Back 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. Lulworth Blue reflects noticeably more light off the walls, making the space read more open than Mouse's Back.
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. Lulworth Blue reflects noticeably more light off the walls, making the space read more open than Mouse's Back.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Lulworth Blue reflects noticeably more light off the walls, making the space read more open than Mouse's Back.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Lulworth Blue will make the room feel meaningfully brighter than Mouse's Back would.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Lulworth Blue reflects noticeably more light off the walls, making the space read more open than Mouse's Back.
Color Details
Lulworth Blue vs Mouse's Back Simulated Comparison
5 simulated room previews — drag the slider on each to see Lulworth Blue on one side and Mouse's Back 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 Lulworth Blue comparisons
See how Lulworth Blue stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 45), opening up a space where Lulworth Blue encloses it.
Purbeck Stone reads slightly lighter (LRV 52 vs 45), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 45 vs 44), so neither reads brighter in a room.
At LRV 68 vs 45, Skimming Stone is decisively the brighter choice.