ΔE 22.5, loose: different enough that you should pick on purpose. Gold Leaf is noticeably lighter, much more saturated than Tainted Gold.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Gold Leaf is noticeably lighter, much more saturated than Tainted Gold.
The same difference applies the other way round: Tainted Gold 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 Tainted Gold on the colour wheel See Gold Leaf on the colour wheel
All matches: Tainted Gold equivalents · Gold Leaf equivalents