Mulled Berry vs Crimson Hell

How close are they?

ΔE 8.3, close: similar, with a visible difference side by side. Crimson Hell is a little darker, more muted, cooler than Mulled Berry.

Can I use Crimson Hell instead of Mulled Berry?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Crimson Hell is a little darker, more muted, cooler than Mulled Berry.

Can I use Mulled Berry instead of Crimson Hell?

The same difference applies the other way round: Mulled Berry is a little lighter, more saturated, 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.