Witchbane Plum vs Sunset Purple

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Sunset Purple is more muted than Witchbane Plum.

Can I use Sunset Purple instead of Witchbane Plum?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Sunset Purple is more muted than Witchbane Plum.

Can I use Witchbane Plum instead of Sunset Purple?

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