Flat Flesh 2 vs Skin Tone

How close are they?

ΔE 7.8, close: similar, with a visible difference side by side. Skin Tone is a little darker, more saturated than Flat Flesh 2.

Can I use Skin Tone instead of Flat Flesh 2?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Skin Tone is a little darker, more saturated than Flat Flesh 2.

Can I use Flat Flesh 2 instead of Skin Tone?

The same difference applies the other way round: Flat Flesh 2 is a little lighter, more muted.

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.