Arsenic is a light green from Farrow & Ball. As a premium paint, it’s a popular colour to seek out close matches and value-brand alternatives to.
Key Largo by Johnstone's is the closest match from any other brand (very close) — though it’s darker (about 3 LRV points). It’s also the best-value tier of the close matches — unusual, as the nearest match and the best-value one usually differ. No other brand gets within a near-identical match of Arsenic — it’s one of the more distinctive colours in the library, so expect a visible difference whichever you pick. LRV is estimated from each brand’s swatch, so order testers before committing.
Below is every genuinely close match to Arsenic from the other eight brands — ranked purely by closeness, so where one brand has several near-misses, they all appear. For the single best match per brand, see the Arsenic colour page.
The nearest Dulux colour is Soft Fauna 3 (close). It won’t be pixel-perfect, so order a tester before committing.
Of the close matches, Key Largo by Johnstone's is the best-value option (value, very close).
The list shows every genuinely close match from other brands, ranked nearest-first by perceptual colour difference — including several from one brand where they’re all close. Screens differ from paint on a wall, so treat these as a shortlist and always order tester pots.
Search any paint name in the tool to see its closest matches across every UK brand.
See the full Arsenic colour page →