ΔE 18.6, loose: different enough that you should pick on purpose. Red Flesh is noticeably darker, cooler than Barbarian Flesh.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Red Flesh is noticeably darker, cooler than Barbarian Flesh.
The same difference applies the other way round: Barbarian Flesh 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 Barbarian Flesh on the colour wheel See Red Flesh on the colour wheel
All matches: Barbarian Flesh equivalents · Red Flesh equivalents