How does Pearl grey (No.22 B 15) by BS 4800 compare with Johnstone's’s closest paints? The nearest match is Johnstone's Arctic Cotton (ΔE 0.7, “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.

BS 4800 Pearl grey (No.22 B 15)

Johnstone's Arctic Cotton identical — ΔE 0.7 £13.37/L

BS 4800 Pearl grey 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
Arctic Cotton	—	0.7	identical	£13.37	£2.23
Willow Springs	—	0.8	identical	£13.37	£2.23
Lauren's Lace	—	1.4	near-identical	£13.37	£2.23

Compare Pearl grey with another brand

Full BS 4800 → Johnstone's conversion chart — every colour's nearest equivalent

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