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 £8.80 per litre. Other close alternatives include Dulux Heritage Midnight Teal (ΔE 2.6) and Dulux Mysterious Teal (ΔE 2.6).

Fathom blue (No.18 C 39) by BS 4800

Hex: #3D5C69
RGB: 61, 92, 105
Colour system: BS 4800

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Nearest paint matches & alternatives

Colour	Manufacturer	ΔE	Match quality	Price/L	Price/m² (?)
Endeavour®	Crown	2.3	Near-identical	£8.80	£1.47
Midnight Teal (No.LRV 11)	Dulux Heritage	2.6	Near-identical	£10.80	£1.35
Mysterious Teal	Dulux	2.6	Near-identical	£14.40	£2.22
Indigo	Edward Bulmer	2.7	Near-identical	£26.40	£4.40
Dark Summit	Johnstone's	2.9	Near-identical	£13.37	£2.23
Hicks' Blue (No.208)	Little Greene	2.9	Near-identical	£29.20	£4.49
Teal Lux	Dulux	3.0	Very close	£14.40	£2.22
Star Blanket	Johnstone's	3.1	Very close	£13.37	£2.23
Dark Energy	Johnstone's	3.3	Very close	£13.37	£2.23

Endeavour® Crown

Near-identical ΔE 2.3

£8.80/L £1.47/m²

Midnight Teal Dulux Heritage

Near-identical ΔE 2.6

£10.80/L £1.35/m²

Mysterious Teal Dulux

Near-identical ΔE 2.6

£14.40/L £2.22/m²

Indigo Edward Bulmer

Near-identical ΔE 2.7

£26.40/L £4.40/m²

Dark Summit Johnstone's

Near-identical ΔE 2.9

£13.37/L £2.23/m²

Hicks' Blue Little Greene

Near-identical ΔE 2.9

Star Blanket Johnstone's

Very close ΔE 3.1

£13.37/L £2.23/m²

Dark Energy Johnstone's

Very close ΔE 3.3

£13.37/L £2.23/m²

Brand-by-brand comparison

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