ΔE 10.0, fair: the same colour family, but not a straight swap. Leviathan Blue is more saturated, cooler than Alpha Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Leviathan Blue is more saturated, cooler than Alpha Blue.
The same difference applies the other way round: Alpha Blue is more muted, 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 Alpha Blue on the colour wheel See Leviathan Blue on the colour wheel
All matches: Alpha Blue equivalents · Leviathan Blue equivalents