Grimoire Purple vs Volcano Brown

How close are they?

ΔE 8.5, close: similar, with a visible difference side by side. Volcano Brown is more muted, warmer than Grimoire Purple.

Can I use Volcano Brown instead of Grimoire Purple?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Volcano Brown is more muted, warmer than Grimoire Purple.

Can I use Grimoire Purple instead of Volcano Brown?

The same difference applies the other way round: Grimoire Purple is more saturated, 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.