Pearl Skin vs Character Flesh 1

How close are they?

ΔE 6.7, close: similar, with a visible difference side by side. Character Flesh 1 is a little darker, more saturated than Pearl Skin.

Can I use Character Flesh 1 instead of Pearl Skin?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Character Flesh 1 is a little darker, more saturated than Pearl Skin.

Can I use Pearl Skin instead of Character Flesh 1?

The same difference applies the other way round: Pearl Skin 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.