Comparison

London Stone vs Stone Lion

Farrow & Ball 6 and Sherwin-Williams SW 7507, ΔE 1.19 apart

Farrow & Ball London Stone 6 on a wall, hex #B3A28E
London Stone Farrow & Ball 6
Sherwin-Williams Stone Lion SW 7507 on a wall, hex #B3A491
Stone Lion Sherwin-Williams SW 7507
Zeytin’s verdict · ΔE 1.19Twins, almost. Only daylight on a big wall tells them apart.

Farrow & Ball London Stone (6) and Sherwin-Williams Stone Lion (SW 7507) measure a delta-E of 1.19 apart. They sit within 0.8 LRV points of each other, so neither will look brighter than the other on the same wall. Both carry a similar amount of color, at chroma 13 and 12. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the London Stone depth in Sherwin-Williams's line, start from its LRV of 37.4 rather than matching by name.

Is Farrow & Ball London Stone the same color as Sherwin-Williams Stone Lion?

Not quite, but close - Farrow & Ball London Stone and Sherwin-Williams Stone Lion are delta-E 1.19 apart, close enough that most rooms would not show the difference.

What is the delta-E between Farrow & Ball London Stone and Sherwin-Williams Stone Lion?

The measured color distance between Farrow & Ball London Stone and Sherwin-Williams Stone Lion is delta-E 1.19.

CLOSEST PAIRΔE 1.19 London Stone and Stone Lion
LIGHTESTStone Lion LRV 38.2
DARKESTLondon Stone LRV 37.4
SPREAD0.8LRV points

Side by side

measured values
London Stone Stone Lion
Brand Farrow & Ball Sherwin-Williams
Code 6 SW 7507
Hex #B3A28E #B3A491
Light reflectance 37.4 38.2
Undertone yellow undertone yellow undertone
Chroma 13.0 12.0
Hue angle 77.1° 79.1°
Color family tan tan

Each on its own

full detail