London Fog vs Swirling Smoke
London Fog is a Benjamin Moore color while Swirling Smoke comes from PPG. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. At LRV 60 vs 56, Swirling Smoke will read as the brighter of the two — a 4-point gap that matters most in north-facing or low-light rooms. With a ΔE of 1.2, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
London Fog vs Swirling Smoke in Real Spaces
1 real room side by side. London Fog and Swirling Smoke are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The brightness difference is modest but present — Swirling Smoke gives the walls a little more lift.
Color Details
London Fog vs Swirling Smoke Simulated Comparison
5 simulated room previews — drag the slider on each to see London Fog on one side and Swirling Smoke 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 London Fog comparisons
See how London Fog stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 56), opening up a space where London Fog encloses it.
At LRV 83 vs 56, White Dove is decisively the brighter choice.
At LRV 56 vs 6, London Fog is decisively the brighter choice.
London Fog reads slightly lighter (LRV 56 vs 52), a gap that shows most in low-lit rooms.
London Fog reflects far more light (LRV 56 vs 30), opening up a space where Evergreen Fog encloses it.
A 5-point LRV gap (56 vs 52) makes London Fog the marginally brighter of the two.
Agreeable Gray reads slightly lighter (LRV 60 vs 56), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 58 vs 56), so neither reads brighter in a room.
At LRV 56 vs 27, London Fog is decisively the brighter choice.
London Fog reflects far more light (LRV 56 vs 43), opening up a space where French Gray encloses it.
London Fog reflects far more light (LRV 56 vs 4), opening up a space where Naval encloses it.
Their light reflectance is nearly identical (LRV 56 vs 55), so neither reads brighter in a room.
At LRV 56 vs 13, London Fog is decisively the brighter choice.
At LRV 56 vs 44, London Fog is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 56), opening up a space where London Fog encloses it.
London Fog reflects far more light (LRV 56 vs 21), opening up a space where Artichoke encloses it.
A 9-point LRV gap (66 vs 56) makes Balboa Mist the marginally brighter of the two.
At LRV 74 vs 56, Shoji White is decisively the brighter choice.
At LRV 83 vs 56, Snowbound is decisively the brighter choice.
London Fog reads slightly lighter (LRV 56 vs 51), a gap that shows most in low-lit rooms.
At LRV 56 vs 12, London Fog is decisively the brighter choice.
At LRV 56 vs 8, London Fog is decisively the brighter choice.
A 12-point LRV gap (68 vs 56) makes Skimming Stone the marginally brighter of the two.
London Fog reflects far more light (LRV 56 vs 41), opening up a space where Dix Blue encloses it.
At LRV 56 vs 12, London Fog is decisively the brighter choice.
A 11-point LRV gap (56 vs 45) makes London Fog the marginally brighter of the two.
London Fog reflects far more light (LRV 56 vs 31), opening up a space where Pale Green encloses it.