ΔE 7.5, close: similar, with a visible difference side by side. RLM 79 Sandy Brown is a little lighter, warmer than Desert Yellow.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). RLM 79 Sandy Brown is a little lighter, warmer than Desert Yellow.
The same difference applies the other way round: Desert Yellow 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.
See Desert Yellow on the colour wheel See RLM 79 Sandy Brown on the colour wheel
All matches: Desert Yellow equivalents · RLM 79 Sandy Brown equivalents