ΔE 11.0, fair: the same colour family, but not a straight swap. Light Violet is a little darker, more saturated, cooler than Faded Plum.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Light Violet is a little darker, more saturated, cooler than Faded Plum.
The same difference applies the other way round: Faded Plum is a little lighter, more muted, 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 Faded Plum on the colour wheel See Light Violet on the colour wheel
All matches: Faded Plum equivalents · Light Violet equivalents