ΔE 15.8, loose: different enough that you should pick on purpose. Yellow FS33531 is a little darker, much more muted than Dorn Yellow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Yellow FS33531 is a little darker, much more muted than Dorn Yellow.
The same difference applies the other way round: Dorn Yellow is a little lighter, much more saturated.
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 Dorn Yellow on the colour wheel See Yellow FS33531 on the colour wheel
All matches: Dorn Yellow equivalents · Yellow FS33531 equivalents