How does Stiffkey Blue by Farrow & Ball compare with Johnstone's’s closest paints? The nearest match is Johnstone's Blue Zephyr (ΔE 1.7, “near-identical”). 2 more Johnstone's colours sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall. These 3 Johnstone's paints are all priced at £13.37 per litre, against Farrow & Ball Stiffkey Blue at £26.40/L.

Farrow & Ball Stiffkey Blue £26.40/L

Johnstone's Blue Zephyr near-identical — ΔE 1.7 £13.37/L

Farrow & Ball Stiffkey Blue vs Johnstone's

3 closest Johnstone's matches ranked by ΔE

ΔE (CIEDE2000) is a perceptual distance metric — lower means a closer match. Matches under ΔE 2 are typically indistinguishable; ΔE 2–4 looks “the same” once dry on a wall; ΔE 4–6 is noticeable side-by-side. Always view a sample pot before committing — screen colours and lighting vary.

Colour	Number	ΔE	Match quality	Price/L	Price/m²
Blue Zephyr	—	1.7	near-identical	£13.37	£2.23
Still Pool	—	2.7	near-identical	£13.37	£2.23
Stained Glass	—	3.7	very close	£13.37	£2.23

Compare Stiffkey Blue with another brand

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