ΔE 6.1, close: similar, with a visible difference side by side. Fluor Turquoise is a little lighter, more saturated than Akhelian Green. They are different kinds of paint: Citadel Akhelian Green is a one-coat contrast-style paint and Green Stuff World Fluor Turquoise is a fluorescent or effect paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Fluor Turquoise is a little lighter, more saturated than Akhelian Green. They are different kinds of paint.
The same difference applies the other way round: Akhelian 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 Akhelian Green on the colour wheel See Fluor Turquoise on the colour wheel
All matches: Akhelian Green equivalents · Fluor Turquoise equivalents