Cultist Purple vs Hive Fleet Purple

How close are they?

ΔE 8.3, close: similar, with a visible difference side by side. Hive Fleet Purple is more muted than Cultist Purple.

Can I use Hive Fleet Purple instead of Cultist Purple?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Hive Fleet Purple is more muted than Cultist Purple.

Can I use Cultist Purple instead of Hive Fleet Purple?

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