ΔE 14.3, fair: the same colour family, but not a straight swap. Dorn Yellow is much more muted than Primary Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Dorn Yellow is much more muted than Primary Yellow.
The same difference applies the other way round: Primary Yellow is 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 Primary Yellow on the colour wheel See Dorn Yellow on the colour wheel
All matches: Primary Yellow equivalents · Dorn Yellow equivalents