ΔE 5.2, very close: most people won’t see a difference side by side. Green Rust is a little lighter, warmer than Pearl Green. They are different kinds of paint: Tamiya Pearl Green is a pearl paint and Vallejo Green Rust is a fluorescent or effect paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 5). Green Rust is a little lighter, warmer than Pearl Green. They are different kinds of paint.
The same difference applies the other way round: Pearl Green 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 Pearl Green on the colour wheel See Green Rust on the colour wheel
All matches: Pearl Green equivalents · Green Rust equivalents