ΔE 13.6, fair: the same colour family, but not a straight swap. Azure is a little darker, cooler than Blue Violet.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Azure is a little darker, cooler than Blue Violet.
The same difference applies the other way round: Blue Violet is a little lighter, 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 Blue Violet on the colour wheel See Azure on the colour wheel
All matches: Blue Violet equivalents · Azure equivalents