ΔE 17.4, loose: different enough that you should pick on purpose. Medium Yellow is noticeably lighter, much more saturated than Golden Brown.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Medium Yellow is noticeably lighter, much more saturated than Golden Brown.
The same difference applies the other way round: Golden Brown is noticeably darker, much more muted.
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 Golden Brown on the colour wheel See Medium Yellow on the colour wheel
All matches: Golden Brown equivalents · Medium Yellow equivalents