ΔE 22.2, loose: different enough that you should pick on purpose. Dreadnought Yellow is noticeably darker, warmer than Nazdreg Yellow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Dreadnought Yellow is noticeably darker, warmer than Nazdreg Yellow.
The same difference applies the other way round: Nazdreg Yellow is noticeably 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 Nazdreg Yellow on the colour wheel See Dreadnought Yellow on the colour wheel
All matches: Nazdreg Yellow equivalents · Dreadnought Yellow equivalents