ΔE 6.4, close: similar, with a visible difference side by side. Earth is a little lighter than Desert Uniform Base.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Earth is a little lighter than Desert Uniform Base.
The same difference applies the other way round: Desert Uniform Base is a little darker.
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.
See Desert Uniform Base on the colour wheel See Earth on the colour wheel
All matches: Desert Uniform Base equivalents · Earth equivalents