ΔE 25.0, loose: different enough that you should pick on purpose. Barbarian Skin is a little lighter, much more muted than Raw Sienna.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Barbarian Skin is a little lighter, much more muted than Raw Sienna.
The same difference applies the other way round: Raw Sienna is a little darker, much more saturated.
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 Raw Sienna on the colour wheel See Barbarian Skin on the colour wheel
All matches: Raw Sienna equivalents · Barbarian Skin equivalents