ΔE 13.9, fair: the same colour family, but not a straight swap. Inktense Lime is much more muted than Shamrock Green. They are different kinds of paint: Army Painter Shamrock Green is a one-coat contrast-style paint and Scale75 Inktense Lime is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Inktense Lime is much more muted than Shamrock Green. They are different kinds of paint.
The same difference applies the other way round: Shamrock Green is much 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 Shamrock Green on the colour wheel See Inktense Lime on the colour wheel
All matches: Shamrock Green equivalents · Inktense Lime equivalents