Dark Violet vs Grimoire Purple

How close are they?

ΔE 12.9, fair: the same colour family, but not a straight swap. Grimoire Purple is a little lighter, warmer than Dark Violet.

Can I use Grimoire Purple instead of Dark Violet?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Grimoire Purple is a little lighter, warmer than Dark Violet.

Can I use Dark Violet instead of Grimoire Purple?

The same difference applies the other way round: Dark Violet is a little darker, 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.