How does Signal white (No.9003) by RAL Classic compare with Johnstone's’s closest paints? The nearest match is Johnstone's Snowy Mount (ΔE 2.2, “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. Prices for these 3 Johnstone's paints range from £7.53 to £13.37 per litre.

RAL Classic Signal white (No.9003)

Johnstone's Snowy Mount near-identical — ΔE 2.2 £13.37/L

RAL Classic Signal white 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
Snowy Mount	—	2.2	near-identical	£13.37	£2.23
Brilliant White	—	2.2	near-identical	£7.53	£1.26
Pure Brilliant White	—	2.2	near-identical	£7.53	£1.26

Compare Signal white with another brand

Full RAL Classic → Johnstone's conversion chart — every colour's nearest equivalent

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