How does Dock Blue (No.252) by Little Greene compare with Johnstone's’s closest paints? The nearest match is Johnstone's Midnight Sapphire (ΔE 1.0, “identical”). 3 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 4 Johnstone's paints range from £7.53 to £13.37 per litre, against Little Greene Dock Blue at £29.20/L.

Little Greene Dock Blue (No.252) £29.20/L

Johnstone's Midnight Sapphire identical — ΔE 1.0 £7.53/L

Little Greene Dock Blue vs Johnstone's

4 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
Midnight Sapphire	—	1.0	identical	£7.53	£1.26
Admiral Blue	—	3.0	near-identical	£7.53	£1.26
Witch’s Cloak	—	3.5	very close	£13.37	£2.23
Black Flame	—	4.0	very close	£13.37	£2.23

Compare Dock Blue with another brand

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