ΔE 18.5, loose: different enough that you should pick on purpose. Desert Brown is a little lighter, much more saturated, warmer than Yellow Ochre.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Desert Brown is a little lighter, much more saturated, warmer than Yellow Ochre.
The same difference applies the other way round: Yellow Ochre is a little darker, much 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.
See Yellow Ochre on the colour wheel See Desert Brown on the colour wheel
All matches: Yellow Ochre equivalents · Desert Brown equivalents