Desert Sand vs Leather Brown

How close are they?

ΔE 6.9, close: similar, with a visible difference side by side. Leather Brown is warmer than Desert Sand.

Can I use Leather Brown instead of Desert Sand?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Leather Brown is warmer than Desert Sand.

Can I use Desert Sand instead of Leather Brown?

The same difference applies the other way round: Desert Sand is 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.