Sapphire blue (No.20 D 45) by BS 4800 is a deep blue. Hex: #3F5F84. RGB: 63, 95, 132. The nearest paint match is RAL Classic Brilliant blue (ΔE 1.3, “near-identical”). Other close alternatives include Little Greene Woad (ΔE 2.3) and Craig & Rose Flanders Blue (ΔE 2.5).

Sapphire blue (No.20 D 45) by BS 4800

Hex: #3F5F84
RGB: 63, 95, 132
Colour system: BS 4800

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Nearest paint matches & alternatives

Colour	Manufacturer	ΔE	Match quality	Price/L	Price/m² (?)
Brilliant blue (No.5007)	RAL Classic	1.3	Near-identical	—	—
Woad (No.251)	Little Greene	2.3	Near-identical	£29.20	£4.49
Flanders Blue	Craig & Rose	2.5	Near-identical	£18.00	£2.57
Blue Odyssey	Johnstone's	2.8	Near-identical	£13.37	£2.23
Vintage Denim	Johnstone's	2.9	Near-identical	£7.53	£1.26
Distant blue (No.5023)	RAL Classic	3.1	Very close	—	—
Morning Jewel 1	Dulux	3.2	Very close	£14.40	£2.22
Dinnerware	Farrow & Ball	3.2	Very close	£26.40	£4.06
Teeny Bikini	Johnstone's	3.9	Very close	£13.37	£2.23

Brilliant blue RAL Classic

Near-identical ΔE 1.3

Woad Little Greene

Near-identical ΔE 2.3

£29.20/L £4.49/m²

Flanders Blue Craig & Rose

Near-identical ΔE 2.5

£18.00/L £2.57/m²

Blue Odyssey Johnstone's

Near-identical ΔE 2.8

£13.37/L £2.23/m²

Vintage Denim Johnstone's

Near-identical ΔE 2.9

£7.53/L £1.26/m²

Distant blue RAL Classic

Very close ΔE 3.1

Morning Jewel 1 Dulux

Very close ΔE 3.2

£14.40/L £2.22/m²

Dinnerware Farrow & Ball

Very close ΔE 3.2

£26.40/L £4.06/m²

Teeny Bikini Johnstone's

Very close ΔE 3.9

£13.37/L £2.23/m²

Brand-by-brand comparison

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