ΔE 14.8, fair: the same colour family, but not a straight swap. Aged Metal is a little darker, more muted, cooler than Chestnut Gold.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Aged Metal is a little darker, more muted, cooler than Chestnut Gold.
The same difference applies the other way round: Chestnut Gold is a little lighter, more saturated, warmer.
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 Chestnut Gold on the colour wheel See Aged Metal on the colour wheel
All matches: Chestnut Gold equivalents · Aged Metal equivalents