Faded Plum vs Lustful Purple

How close are they?

ΔE 9.8, close: similar, with a visible difference side by side. Lustful Purple is a little lighter, cooler than Faded Plum.

Can I use Lustful Purple instead of Faded Plum?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Lustful Purple is a little lighter, cooler than Faded Plum.

Can I use Faded Plum instead of Lustful Purple?

The same difference applies the other way round: Faded Plum is a little darker, warmer.

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.