Cultist Purple vs Amethyst Purple

How close are they?

ΔE 7.6, close: similar, with a visible difference side by side. Amethyst Purple is warmer than Cultist Purple. They are different kinds of paint: Army Painter Cultist Purple is an opaque base/layer paint and Green Stuff World Amethyst Purple is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Amethyst Purple instead of Cultist Purple?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Amethyst Purple is warmer than Cultist Purple. They are different kinds of paint.

Can I use Cultist Purple instead of Amethyst Purple?

The same difference applies the other way round: Cultist Purple is cooler.

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.