ΔE 13.2, fair: the same colour family, but not a straight swap. Hexed Lichen is much more muted than Medium Violet.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Hexed Lichen is much more muted than Medium Violet.
The same difference applies the other way round: Medium Violet is 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 Medium Violet on the colour wheel See Hexed Lichen on the colour wheel
All matches: Medium Violet equivalents · Hexed Lichen equivalents