ΔE 9.8, close: similar, with a visible difference side by side. Wolf Grey is more muted, cooler than Medium Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Wolf Grey is more muted, cooler than Medium Blue.
The same difference applies the other way round: Medium Blue is more saturated, 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 Medium Blue on the colour wheel See Wolf Grey on the colour wheel
All matches: Medium Blue equivalents · Wolf Grey equivalents