River Blue vs Purbeck Stone
River Blue (Benjamin Moore) and Purbeck Stone (Farrow & Ball) come from different manufacturers. Hue-wise, River Blue belongs to the blue family and Purbeck Stone to the greige-grey family. The 45-point LRV gap — 52 for Purbeck Stone vs 7 for River Blue — means Purbeck Stone will open up a space more effectively. Where River Blue leans blue, Purbeck Stone reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 51.8 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
River Blue vs Purbeck Stone in Real Spaces
4 real rooms side by side. Seeing River 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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Purbeck Stone reflects noticeably more light off the walls, making the space read more open than River Blue.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Purbeck Stone returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The LRV gap is large enough that Purbeck Stone will make the room feel meaningfully brighter than River Blue would.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Purbeck Stone returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
River Blue vs Purbeck Stone Simulated Comparison
5 simulated room previews — drag the slider on each to see River 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 River Blue comparisons
See how River Blue stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 7), opening up a space where River Blue encloses it.
At LRV 69 vs 7, Ammonite is decisively the brighter choice.
With LRVs of 7 and 6, the two reflect almost the same amount of light.
At LRV 30 vs 7, Evergreen Fog is decisively the brighter choice.
Mizzle reflects far more light (LRV 52 vs 7), opening up a space where River Blue encloses it.
At LRV 60 vs 7, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 7), opening up a space where River Blue encloses it.
Denim Drift reflects far more light (LRV 27 vs 7), opening up a space where River Blue encloses it.
At LRV 43 vs 7, French Gray is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 7 vs 4), so neither reads brighter in a room.
Tranquil Dawn reflects far more light (LRV 55 vs 7), opening up a space where River Blue encloses it.
Bancha reads slightly lighter (LRV 13 vs 7), a gap that shows most in low-lit rooms.
Hardwick White reflects far more light (LRV 44 vs 7), opening up a space where River Blue encloses it.
At LRV 84 vs 7, Pure White is decisively the brighter choice.
At LRV 21 vs 7, Artichoke is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 7), opening up a space where River Blue encloses it.
Shoji White reflects far more light (LRV 74 vs 7), opening up a space where River Blue encloses it.
Snowbound reflects far more light (LRV 83 vs 7), opening up a space where River Blue encloses it.
Pewter Green reads slightly lighter (LRV 12 vs 7), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 7), opening up a space where River Blue encloses it.
At LRV 41 vs 7, Dix Blue is decisively the brighter choice.
At LRV 68 vs 7, Calamine is decisively the brighter choice.
At LRV 25 vs 7, Treron is decisively the brighter choice.
Vintage Vogue reads slightly lighter (LRV 12 vs 7), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 7), opening up a space where River Blue encloses it.
At LRV 31 vs 7, Pale Green is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 7 vs 7), so neither reads brighter in a room.
At LRV 24 vs 7, Cement grey is decisively the brighter choice.
At LRV 57 vs 7, Guilford Green is decisively the brighter choice.
At LRV 72 vs 7, Just Walnut is decisively the brighter choice.