ΔE 11.9, fair: the same colour family, but not a straight swap. Striking Scorpion Green is a little lighter, more saturated than Weed Green. They are different kinds of paint: AMMO by Mig Weed Green is an opaque base/layer paint and Citadel Striking Scorpion Green 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 12). Striking Scorpion Green is a little lighter, more saturated than Weed Green. They are different kinds of paint.
The same difference applies the other way round: Weed Green is a little darker, 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 Weed Green on the colour wheel See Striking Scorpion Green on the colour wheel
All matches: Weed Green equivalents · Striking Scorpion Green equivalents