ΔE 12.9, fair: the same colour family, but not a straight swap. Tainted Gold is noticeably darker, warmer than Old Gold.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Tainted Gold is noticeably darker, warmer than Old Gold.
The same difference applies the other way round: Old Gold 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 Old Gold on the colour wheel See Tainted Gold on the colour wheel
All matches: Old Gold equivalents · Tainted Gold equivalents