Diabolic Plum vs Clear Plum

How close are they?

ΔE 15.1, loose: different enough that you should pick on purpose. Clear Plum is a little darker, more muted, warmer than Diabolic Plum. They are different kinds of paint: Army Painter Diabolic Plum is an opaque base/layer paint and Reaper Clear Plum 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 Clear Plum instead of Diabolic Plum?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Clear Plum is a little darker, more muted, warmer than Diabolic Plum. They are different kinds of paint.

Can I use Diabolic Plum instead of Clear Plum?

The same difference applies the other way round: Diabolic Plum is a little lighter, 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.