ΔE 5.0, very close: most people won’t see a difference side by side. A-14 Steel Grey is a little lighter than IJA #3 Hairanshoku (Grey Indigo).
Yes, for most jobs. Very close match (ΔE 5). A-14 Steel Grey is a little lighter than IJA #3 Hairanshoku (Grey Indigo).
The same difference applies the other way round: IJA #3 Hairanshoku (Grey Indigo) is a little darker.
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 #3 Hairanshoku (Grey Indigo) on the colour wheel See A-14 Steel Grey on the colour wheel
All matches: IJA #3 Hairanshoku (Grey Indigo) equivalents · A-14 Steel Grey equivalents