How does Iron Grey (No.SAP1077) by Sanderson compare with Johnstone's’s closest paints? The nearest match is Johnstone's Stone Sundial (ΔE 1.6, “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 Sanderson Iron Grey at £20.00/L.

Sanderson Iron Grey (No.SAP1077) £20.00/L

Johnstone's Stone Sundial near-identical — ΔE 1.6 £13.37/L

Sanderson Iron 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
Stone Sundial	—	1.6	near-identical	£13.37	£2.23
Grey Marble	—	2.0	near-identical	£13.37	£2.23
Slate Pebble	—	2.1	near-identical	£13.37	£2.23

Compare Iron Grey with another brand

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