ΔE 10.0, close: similar, with a visible difference side by side. Quicksand Brown is warmer than Fresh Rust.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Quicksand Brown is warmer than Fresh Rust.
The same difference applies the other way round: Fresh Rust is 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 Fresh Rust on the colour wheel See Quicksand Brown on the colour wheel
All matches: Fresh Rust equivalents · Quicksand Brown equivalents