ΔE 13.0, fair: the same colour family, but not a straight swap. Bronze Brown is a little darker, more muted, warmer than Mars Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Bronze Brown is a little darker, more muted, warmer than Mars Yellow.
The same difference applies the other way round: Mars Yellow is a little lighter, more saturated, 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 Mars Yellow on the colour wheel See Bronze Brown on the colour wheel
All matches: Mars Yellow equivalents · Bronze Brown equivalents