ΔE 23.0, loose: different enough that you should pick on purpose. Blue Violet is noticeably darker, much more muted than Light Violet.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Blue Violet is noticeably darker, much more muted than Light Violet.
The same difference applies the other way round: Light Violet is noticeably lighter, much 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 Light Violet on the colour wheel See Blue Violet on the colour wheel
All matches: Light Violet equivalents · Blue Violet equivalents