ΔE 14.5, fair: the same colour family, but not a straight swap. Petroleum Brown is more saturated, warmer than Desert Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Petroleum Brown is more saturated, warmer than Desert Yellow.
The same difference applies the other way round: Desert Yellow is 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 Desert Yellow on the colour wheel See Petroleum Brown on the colour wheel
All matches: Desert Yellow equivalents · Petroleum Brown equivalents