ΔE 7.9, close: similar, with a visible difference side by side. Bloodtoof Red is a little lighter, more saturated than Blood Chalice.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Bloodtoof Red is a little lighter, more saturated than Blood Chalice.
The same difference applies the other way round: Blood Chalice is a little darker, 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.
See Blood Chalice on the colour wheel See Bloodtoof Red on the colour wheel
All matches: Blood Chalice equivalents · Bloodtoof Red equivalents