ΔE 12.5, fair: the same colour family, but not a straight swap. Runic Purple is a little darker, more muted, warmer than Baron Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Runic Purple is a little darker, more muted, warmer than Baron Blue.
The same difference applies the other way round: Baron Blue is a little lighter, 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 Baron Blue on the colour wheel See Runic Purple on the colour wheel
All matches: Baron Blue equivalents · Runic Purple equivalents