ΔE 12.8, fair: the same colour family, but not a straight swap. Light Violet is more muted, cooler than Lilac Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Light Violet is more muted, cooler than Lilac Purple.
The same difference applies the other way round: Lilac Purple is more saturated, 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 Lilac Purple on the colour wheel See Light Violet on the colour wheel
All matches: Lilac Purple equivalents · Light Violet equivalents