ΔE 13.3, fair: the same colour family, but not a straight swap. Blood Chalice is a little lighter, more saturated, warmer than Space Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Blood Chalice is a little lighter, more saturated, warmer than Space Red.
The same difference applies the other way round: Space Red is a little darker, more muted, cooler.
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 Space Red on the colour wheel See Blood Chalice on the colour wheel
All matches: Space Red equivalents · Blood Chalice equivalents