ΔE 17.5, loose: different enough that you should pick on purpose. Sun Yellow is a little darker, warmer than Orange Yellow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Sun Yellow is a little darker, warmer than Orange Yellow.
The same difference applies the other way round: Orange Yellow 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 Orange Yellow on the colour wheel See Sun Yellow on the colour wheel
All matches: Orange Yellow equivalents · Sun Yellow equivalents