ΔE 9.3, close: similar, with a visible difference side by side. Yellow Ochre is a little lighter, more saturated, cooler than Desert Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Yellow Ochre is a little lighter, more saturated, cooler than Desert Brown.
The same difference applies the other way round: Desert Brown is a little darker, more muted, warmer.
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 Brown on the colour wheel See Yellow Ochre on the colour wheel
All matches: Desert Brown equivalents · Yellow Ochre equivalents