ΔE 9.3, close: similar, with a visible difference side by side. Artic Blue is more muted, warmer than Blue Horror.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Artic Blue is more muted, warmer than Blue Horror.
The same difference applies the other way round: Blue Horror is more saturated, 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 Blue Horror on the colour wheel See Artic Blue on the colour wheel
All matches: Blue Horror equivalents · Artic Blue equivalents