ΔE 12.2, fair: the same colour family, but not a straight swap. Gold is a little lighter, more muted than Copper Coin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Gold is a little lighter, more muted than Copper Coin.
The same difference applies the other way round: Copper Coin is a little darker, more saturated.
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 Copper Coin on the colour wheel See Gold on the colour wheel
All matches: Copper Coin equivalents · Gold equivalents