ΔE 15.0, fair: the same colour family, but not a straight swap. IJA Light Grey Green is a little lighter, more saturated than Griffon Claw.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). IJA Light Grey Green is a little lighter, more saturated than Griffon Claw.
The same difference applies the other way round: Griffon Claw is a little darker, more muted.
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 Griffon Claw on the colour wheel See IJA Light Grey Green on the colour wheel
All matches: Griffon Claw equivalents · IJA Light Grey Green equivalents