ΔE 15.0, fair: the same colour family, but not a straight swap. Greenish Gold is a little lighter, cooler than Top Brass.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Greenish Gold is a little lighter, cooler than Top Brass.
The same difference applies the other way round: Top Brass is a little 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 Top Brass on the colour wheel See Greenish Gold on the colour wheel
All matches: Top Brass equivalents · Greenish Gold equivalents