ΔE 11.7, fair: the same colour family, but not a straight swap. Light Green is noticeably lighter than Warpstone Glow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Light Green is noticeably lighter than Warpstone Glow.
The same difference applies the other way round: Warpstone Glow is noticeably darker.
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 Warpstone Glow on the colour wheel See Light Green on the colour wheel
All matches: Warpstone Glow equivalents · Light Green equivalents