ΔE 12.7, fair: the same colour family, but not a straight swap. Baneblade Brown is a little lighter, more muted, warmer than Putrid White.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Baneblade Brown is a little lighter, more muted, warmer than Putrid White.
The same difference applies the other way round: Putrid White is a little darker, 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 Putrid White on the colour wheel See Baneblade Brown on the colour wheel
All matches: Putrid White equivalents · Baneblade Brown equivalents