Blood Chalice vs Cherry Red

How close are they?

ΔE 20.2, loose: different enough that you should pick on purpose. Cherry Red is a little darker, more saturated, cooler than Blood Chalice.

Can I use Cherry Red instead of Blood Chalice?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Cherry Red is a little darker, more saturated, cooler than Blood Chalice.

Can I use Blood Chalice instead of Cherry Red?

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