ΔE 16.7, loose: different enough that you should pick on purpose. C.P. Cadmium Yellow Primrose is noticeably lighter, cooler than Dorn Yellow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). C.P. Cadmium Yellow Primrose is noticeably lighter, cooler than Dorn Yellow.
The same difference applies the other way round: Dorn Yellow is noticeably darker, warmer.
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 C.P. Cadmium Yellow Primrose on the colour wheel
All matches: Dorn Yellow equivalents · C.P. Cadmium Yellow Primrose equivalents