ΔE 14.0, fair: the same colour family, but not a straight swap. Warpstone Glow is noticeably darker, more saturated than Pure Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Warpstone Glow is noticeably darker, more saturated than Pure Green.
The same difference applies the other way round: Pure Green is noticeably lighter, 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 Pure Green on the colour wheel See Warpstone Glow on the colour wheel
All matches: Pure Green equivalents · Warpstone Glow equivalents