ΔE 8.1, close: similar, with a visible difference side by side. Sand Yellow RLM79 is a little lighter, cooler than Argonaut Skin.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Sand Yellow RLM79 is a little lighter, cooler than Argonaut Skin.
The same difference applies the other way round: Argonaut Skin is a little darker, 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 Argonaut Skin on the colour wheel See Sand Yellow RLM79 on the colour wheel
All matches: Argonaut Skin equivalents · Sand Yellow RLM79 equivalents