Ratskin Flesh vs Caucasian Skin

How close are they?

ΔE 9.9, close: similar, with a visible difference side by side. Caucasian Skin is a little lighter than Ratskin Flesh.

Can I use Caucasian Skin instead of Ratskin Flesh?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Caucasian Skin is a little lighter than Ratskin Flesh.

Can I use Ratskin Flesh instead of Caucasian Skin?

The same difference applies the other way round: Ratskin Flesh is a little darker.

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.