Barbarian Flesh vs Reddish Flesh

How close are they?

ΔE 9.7, close: similar, with a visible difference side by side. Reddish Flesh is a little darker, more saturated, cooler than Barbarian Flesh.

Can I use Reddish Flesh instead of Barbarian Flesh?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Reddish Flesh is a little darker, more saturated, cooler than Barbarian Flesh.

Can I use Barbarian Flesh instead of Reddish Flesh?

The same difference applies the other way round: Barbarian Flesh is a little lighter, more muted, 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.