ΔE 7.5, close: similar, with a visible difference side by side. Medium Blue is a little darker, more muted than Shalaxi Violet.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Medium Blue is a little darker, more muted than Shalaxi Violet.
The same difference applies the other way round: Shalaxi Violet is a little lighter, more saturated.
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 Shalaxi Violet on the colour wheel See Medium Blue on the colour wheel
All matches: Shalaxi Violet equivalents · Medium Blue equivalents