How does Ammonite by Farrow & Ball compare with BS 4800’s closest paints? The nearest match is BS 4800 Ash grey (ΔE 0.8, “identical”). 2 more BS 4800 colours sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall.

Farrow & Ball Ammonite £26.40/L

BS 4800 Ash grey (No.00 A 01) identical — ΔE 0.8

Farrow & Ball Ammonite vs BS 4800

3 closest BS 4800 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
Ash grey	No.00 A 01	0.8	identical	—	—
Pearl grey	No.22 B 15	3.3	very close	—	—
Dawn grey	No.10 A 03	3.7	very close	—	—

Compare Ammonite with another brand

Full Farrow & Ball → BS 4800 conversion chart — every colour's nearest equivalent

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