Desert Sand vs Corpse Pale

How close are they?

ΔE 8.5, close: similar, with a visible difference side by side. Corpse Pale is a little lighter, warmer than Desert Sand.

Can I use Corpse Pale instead of Desert Sand?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Corpse Pale is a little lighter, warmer than Desert Sand.

Can I use Desert Sand instead of Corpse Pale?

The same difference applies the other way round: Desert Sand is a little darker, 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.