ΔE 6.8, close: similar, with a visible difference side by side. Russian AF Blue is a little darker than Baharroth Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Russian AF Blue is a little darker than Baharroth Blue.
The same difference applies the other way round: Baharroth Blue is a little lighter.
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 Baharroth Blue on the colour wheel See Russian AF Blue on the colour wheel
All matches: Baharroth Blue equivalents · Russian AF Blue equivalents