ΔE 5.2, very close: most people won’t see a difference side by side. Dark Rust is a little darker, warmer than Waffen Red Brown.
Yes, for most jobs. Very close match (ΔE 5). Dark Rust is a little darker, warmer than Waffen Red Brown.
The same difference applies the other way round: Waffen Red Brown is a little lighter, 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 Waffen Red Brown on the colour wheel See Dark Rust on the colour wheel
All matches: Waffen Red Brown equivalents · Dark Rust equivalents