Centaur Skin vs Flayed One Flesh

How close are they?

ΔE 7.5, close: similar, with a visible difference side by side. Flayed One Flesh is a little darker, warmer than Centaur Skin.

Can I use Flayed One Flesh instead of Centaur Skin?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Flayed One Flesh is a little darker, warmer than Centaur Skin.

Can I use Centaur Skin instead of Flayed One Flesh?

The same difference applies the other way round: Centaur Skin is a little lighter, 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.