ΔE 10.9, fair: the same colour family, but not a straight swap. IJA Grey Green is a little darker, more muted, warmer than APC Interior Light Green (FS24533).
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). IJA Grey Green is a little darker, more muted, warmer than APC Interior Light Green (FS24533).
The same difference applies the other way round: APC Interior Light Green (FS24533) is a little lighter, 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 APC Interior Light Green (FS24533) on the colour wheel See IJA Grey Green on the colour wheel
All matches: APC Interior Light Green (FS24533) equivalents · IJA Grey Green equivalents