ΔE 11.6, fair: the same colour family, but not a straight swap. Hammered Copper is a little darker than Golden Moon.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Hammered Copper is a little darker than Golden Moon.
The same difference applies the other way round: Golden Moon is a little lighter.
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 Moon on the colour wheel See Hammered Copper on the colour wheel
All matches: Golden Moon equivalents · Hammered Copper equivalents