What is the difference between Ultramarine Blue and Summersea Blue?

ΔE 16 (loose). Summersea Blue is noticeably lighter, cooler. Swatch colours are estimates.

Ultramarine Blue vs Summersea Blue

Ultramarine Blue

Brand: Army Painter
Range: Warpaints Air
Type: an opaque base/layer paint
Swatch: #2a4a98 (estimate)

Summersea Blue

Brand: Green Stuff World
Range: Acrylic Colors
Code: 1793
Type: an opaque base/layer paint
Swatch: #0069b4 (estimate)

How close are they?

ΔE 16.1, loose: different enough that you should pick on purpose. Summersea Blue is noticeably lighter, cooler than Ultramarine Blue.

Can I use Summersea Blue instead of Ultramarine Blue?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Summersea Blue is noticeably lighter, cooler than Ultramarine Blue.

Can I use Ultramarine Blue instead of Summersea Blue?

The same difference applies the other way round: Ultramarine Blue is noticeably darker, warmer.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.

See Ultramarine Blue on the colour wheel See Summersea Blue on the colour wheel

Other Green Stuff World paints close to Ultramarine Blue

Ultramarine Blue vs Marine Blue (1792)Acrylic Colors · ΔE 10, fair · closer than Summersea Blue
Ultramarine Blue vs Imperium Blue (1846)Acrylic Colors · ΔE 13, fair · closer than Summersea Blue
Ultramarine Blue vs Blue Base (4115)Opaque Colors · ΔE 18, loose

Other Army Painter paints close to Summersea Blue

Summersea Blue vs Crystal BlueWarpaints Fanatic · ΔE 3, very close · closer than Ultramarine Blue
Summersea Blue vs Crystal BlueWarpaints Air · ΔE 4, very close · closer than Ultramarine Blue
Summersea Blue vs Sapphire GemWarpaints Air · ΔE 4, very close · closer than Ultramarine Blue

All matches: Ultramarine Blue equivalents · Summersea Blue equivalents