ΔE 5.2, very close: most people won’t see a difference side by side. US Sand is more muted than IJA #30 Karekusa iro (Dry Grass).
Yes, for most jobs. Very close match (ΔE 5). US Sand is more muted than IJA #30 Karekusa iro (Dry Grass).
The same difference applies the other way round: IJA #30 Karekusa iro (Dry Grass) is more saturated.
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 US Sand on the colour wheel
All matches: IJA #30 Karekusa iro (Dry Grass) equivalents · US Sand equivalents