ΔE 5.6, very close: most people won’t see a difference side by side. IJN Deep Dark Green is more muted, cooler than J.A. Green.
Yes, for most jobs. Very close match (ΔE 6). IJN Deep Dark Green is more muted, cooler than J.A. Green.
The same difference applies the other way round: J.A. Green is more saturated, warmer.
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 J.A. Green on the colour wheel See IJN Deep Dark Green on the colour wheel
All matches: J.A. Green equivalents · IJN Deep Dark Green equivalents