Pure Green vs Warpstone Glow

How close are they?

ΔE 30.3, loose: different enough that you should pick on purpose. Warpstone Glow is noticeably darker, more muted, cooler than Pure Green.

Can I use Warpstone Glow instead of Pure Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 30). Warpstone Glow is noticeably darker, more muted, cooler than Pure Green.

Can I use Pure Green instead of Warpstone Glow?

The same difference applies the other way round: Pure Green is noticeably lighter, more saturated, warmer.

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.