Blood Chalice vs Dusty Rose

How close are they?

ΔE 15.0, loose: different enough that you should pick on purpose. Dusty Rose is noticeably lighter, more muted, cooler than Blood Chalice.

Can I use Dusty Rose instead of Blood Chalice?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Dusty Rose is noticeably lighter, more muted, cooler than Blood Chalice.

Can I use Blood Chalice instead of Dusty Rose?

The same difference applies the other way round: Blood Chalice is noticeably darker, 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.