Mutant Hue vs Decadent Purple

How close are they?

ΔE 14.4, fair: the same colour family, but not a straight swap. Decadent Purple is a little darker, cooler than Mutant Hue.

Can I use Decadent Purple instead of Mutant Hue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Decadent Purple is a little darker, cooler than Mutant Hue.

Can I use Mutant Hue instead of Decadent Purple?

The same difference applies the other way round: Mutant Hue is a little lighter, 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.