Noble Skin vs Zombie

How close are they?

ΔE 7.1, close: similar, with a visible difference side by side. Zombie is a little darker, more saturated, cooler than Noble Skin.

Can I use Zombie instead of Noble Skin?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Zombie is a little darker, more saturated, cooler than Noble Skin.

Can I use Noble Skin instead of Zombie?

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