Tan Earth vs Leather Brown

How close are they?

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

Can I use Leather Brown instead of Tan Earth?

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

Can I use Tan Earth instead of Leather Brown?

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.