Volcano Brown vs Chalice Red

How close are they?

ΔE 9.9, close: similar, with a visible difference side by side. Chalice Red is a little darker, more saturated than Volcano Brown.

Can I use Chalice Red instead of Volcano Brown?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Chalice Red is a little darker, more saturated than Volcano Brown.

Can I use Volcano Brown instead of Chalice Red?

The same difference applies the other way round: Volcano Brown is a little lighter, more muted.

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.