ΔE 16.9, loose: different enough that you should pick on purpose. Iosan Green is a little lighter, much more saturated, cooler than Striking Scorpion Green. They are different kinds of paint: Citadel Striking Scorpion Green is a one-coat contrast-style paint and Formula P3 Iosan Green is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Iosan Green is a little lighter, much more saturated, cooler than Striking Scorpion Green. They are different kinds of paint.
The same difference applies the other way round: Striking Scorpion Green is a little darker, much more muted, 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.
See Striking Scorpion Green on the colour wheel See Iosan Green on the colour wheel
All matches: Striking Scorpion Green equivalents · Iosan Green equivalents