ΔE 11.6, fair: the same colour family, but not a straight swap. Light Violet is a little lighter, more muted than Coven Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Light Violet is a little lighter, more muted than Coven Purple.
The same difference applies the other way round: Coven Purple is a little darker, 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 Coven Purple on the colour wheel See Light Violet on the colour wheel
All matches: Coven Purple equivalents · Light Violet equivalents