How does Ancona Blue by Farrow & Ball compare with Johnstone's’s closest paints? The nearest match is Johnstone's Crystal Oasis (ΔE 1.4, “near-identical”). 6 more Johnstone's colours sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall. Prices for these 7 Johnstone's paints range from £7.53 to £13.37 per litre, against Farrow & Ball Ancona Blue at £26.40/L.

Farrow & Ball Ancona Blue £26.40/L

Johnstone's Crystal Oasis near-identical — ΔE 1.4 £13.37/L

Farrow & Ball Ancona Blue vs Johnstone's

7 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
Crystal Oasis	—	1.4	near-identical	£13.37	£2.23
Sea Of Solitude	—	1.9	near-identical	£13.37	£2.23
Spring Rosemary	—	2.3	near-identical	£7.53	£1.26
Frosty Glade	—	2.7	near-identical	£13.37	£2.23
Vintage Duck Egg	—	2.8	near-identical	£7.53	£1.26
Sea Sprite	—	2.9	near-identical	£13.37	£2.23
Aquamarine Dream	—	2.9	near-identical	£13.37	£2.23

Compare Ancona Blue with another brand

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