ΔE 8.0, close: similar, with a visible difference side by side. RLM 79 Sand Yellow is a little darker than Paratrooper Tan.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). RLM 79 Sand Yellow is a little darker than Paratrooper Tan.
The same difference applies the other way round: Paratrooper Tan is a little lighter.
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 Paratrooper Tan on the colour wheel See RLM 79 Sand Yellow on the colour wheel
All matches: Paratrooper Tan equivalents · RLM 79 Sand Yellow equivalents