ΔE 13.3, fair: the same colour family, but not a straight swap. Aged Metal is noticeably lighter, cooler than Brass.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Aged Metal is noticeably lighter, cooler than Brass.
The same difference applies the other way round: Brass is noticeably darker, 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 Brass on the colour wheel See Aged Metal on the colour wheel
All matches: Brass equivalents · Aged Metal equivalents