ΔE 13.6, fair: the same colour family, but not a straight swap. Baneblade Brown is noticeably lighter, more saturated, warmer than IJA #30 Karekusa iro (Dry Grass).
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Baneblade Brown is noticeably lighter, more saturated, warmer than IJA #30 Karekusa iro (Dry Grass).
The same difference applies the other way round: IJA #30 Karekusa iro (Dry Grass) is noticeably darker, more muted, 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 IJA #30 Karekusa iro (Dry Grass) on the colour wheel See Baneblade Brown on the colour wheel
All matches: IJA #30 Karekusa iro (Dry Grass) equivalents · Baneblade Brown equivalents