ΔE 7.9, close: similar, with a visible difference side by side. Dark Yellow is a little darker, warmer than RAL 7028 Dunkelgelb (Initial).
✓ AK 3rd Generation equivalence chart lists these two as equivalents.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dark Yellow is a little darker, warmer than RAL 7028 Dunkelgelb (Initial).
The same difference applies the other way round: RAL 7028 Dunkelgelb (Initial) 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 RAL 7028 Dunkelgelb (Initial) on the colour wheel See Dark Yellow on the colour wheel
All matches: RAL 7028 Dunkelgelb (Initial) equivalents · Dark Yellow equivalents