ΔE 13.3, fair: the same colour family, but not a straight swap. Imperial Gold is more muted, warmer than Gold Rush.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Imperial Gold is more muted, warmer than Gold Rush.
The same difference applies the other way round: Gold Rush is more saturated, 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 Gold Rush on the colour wheel See Imperial Gold on the colour wheel
All matches: Gold Rush equivalents · Imperial Gold equivalents