Witchbane Plum vs Permanent Violet Dark

How close are they?

ΔE 14.8, fair: the same colour family, but not a straight swap. Permanent Violet Dark is more saturated, cooler than Witchbane Plum.

Can I use Permanent Violet Dark instead of Witchbane Plum?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Permanent Violet Dark is more saturated, cooler than Witchbane Plum.

Can I use Witchbane Plum instead of Permanent Violet Dark?

The same difference applies the other way round: Witchbane Plum is 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.