ΔE 11.9, fair: the same colour family, but not a straight swap. Heirloom Gold is a little lighter, warmer than Hoard Bronze.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Heirloom Gold is a little lighter, warmer than Hoard Bronze.
The same difference applies the other way round: Hoard Bronze is a little darker, 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 Hoard Bronze on the colour wheel See Heirloom Gold on the colour wheel
All matches: Hoard Bronze equivalents · Heirloom Gold equivalents