ΔE 12.7, fair: the same colour family, but not a straight swap. Warp Lightning is warmer than Luminous Green INK. They are different kinds of paint: AK Interactive Luminous Green INK is an ink, glaze or transparent paint and Citadel Warp Lightning is a one-coat contrast-style 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 13). Warp Lightning is warmer than Luminous Green INK. They are different kinds of paint.
The same difference applies the other way round: Luminous Green INK is 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 Luminous Green INK on the colour wheel See Warp Lightning on the colour wheel
All matches: Luminous Green INK equivalents · Warp Lightning equivalents