Tan Earth vs Catachan Flesh

How close are they?

ΔE 9.4, close: similar, with a visible difference side by side. Catachan Flesh is a little lighter, more saturated, warmer than Tan Earth.

Can I use Catachan Flesh instead of Tan Earth?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Catachan Flesh is a little lighter, more saturated, warmer than Tan Earth.

Can I use Tan Earth instead of Catachan Flesh?

The same difference applies the other way round: Tan Earth is a little darker, more muted, 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.