ΔE 11.6, fair: the same colour family, but not a straight swap. Amaranth Red is a little darker, more muted, warmer than Bloodtoof Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Amaranth Red is a little darker, more muted, warmer than Bloodtoof Red.
The same difference applies the other way round: Bloodtoof Red is a little lighter, more saturated, 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 Bloodtoof Red on the colour wheel See Amaranth Red on the colour wheel
All matches: Bloodtoof Red equivalents · Amaranth Red equivalents