ΔE 14.5, fair: the same colour family, but not a straight swap. Flesh Tearers Red is noticeably darker, cooler than Bright Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Flesh Tearers Red is noticeably darker, cooler than Bright Red.
The same difference applies the other way round: Bright Red is noticeably lighter, 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.
See Bright Red on the colour wheel See Flesh Tearers Red on the colour wheel
All matches: Bright Red equivalents · Flesh Tearers Red equivalents