ΔE 8.0, close: similar, with a visible difference side by side. Dark Blue is a little lighter, warmer than Ensign Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dark Blue is a little lighter, warmer than Ensign Blue.
The same difference applies the other way round: Ensign Blue is a little darker, cooler.
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 Ensign Blue on the colour wheel See Dark Blue on the colour wheel
All matches: Ensign Blue equivalents · Dark Blue equivalents