Fathom blue (No.18 C 39) by BS 4800 is a deep muted cyan. Hex: #3D5C69. RGB: 61, 92, 105. The nearest paint match is Crown Endeavour® (ΔE 2.3, “near-identical”), priced at approximately £8.20 per litre. Other close matches include Dulux Heritage Midnight Teal (ΔE 2.6) and Edward Bulmer Indigo (ΔE 2.7).
Nearest paint matches
| Colour | Manufacturer | ΔE | Match quality | Price/L | Price/m2 (?) |
|---|---|---|---|---|---|
| Endeavour® | Crown | 2.3 | Near-identical | £8.20 | £1.37 |
| Midnight Teal (No.LRV 11) | Dulux Heritage | 2.6 | Near-identical | £10.40 | £1.30 |
| Indigo | Edward Bulmer | 2.7 | Near-identical | £26.40 | £4.40 |
| Dark Summit | Johnstone's | 2.9 | Near-identical | £12.36 | £2.06 |
| Hicks' Blue (No.3) | Little Greene | 2.9 | Near-identical | £28.00 | £4.31 |
| Star Blanket | Johnstone's | 3.1 | Very close | £12.36 | £2.06 |
| Dark Energy | Johnstone's | 3.3 | Very close | £12.36 | £2.06 |
| Genuine® | Crown | 3.6 | Very close | £13.20 | £2.20 |
| Dark Water | Johnstone's | 3.8 | Very close | £12.36 | £2.06 |
Endeavour®
Crown
Near-identical
ΔE 2.3
£8.20/L
£1.37/m2
Midnight Teal
Dulux Heritage
Near-identical
ΔE 2.6
£10.40/L
£1.30/m2
Indigo
Edward Bulmer
Near-identical
ΔE 2.7
£26.40/L
£4.40/m2
Dark Summit
Johnstone's
Near-identical
ΔE 2.9
£12.36/L
£2.06/m2
Hicks' Blue
Little Greene
Near-identical
ΔE 2.9
£28.00/L
£4.31/m2
Star Blanket
Johnstone's
Very close
ΔE 3.1
£12.36/L
£2.06/m2
Dark Energy
Johnstone's
Very close
ΔE 3.3
£12.36/L
£2.06/m2
Genuine®
Crown
Very close
ΔE 3.6
£13.20/L
£2.20/m2
Dark Water
Johnstone's
Very close
ΔE 3.8
£12.36/L
£2.06/m2
Brand-by-brand comparison
See how Fathom blue sits next to the closest paints from one specific brand at a time, ranked by perceptual distance.
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