ΔE 15.0, loose: different enough that you should pick on purpose. Hexwraith Flame is a little darker, warmer than Turquoise Green. They are different kinds of paint: AMMO by Mig Turquoise Green is an opaque base/layer paint and Citadel Hexwraith Flame is a one-coat contrast-style 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 15). Hexwraith Flame is a little darker, warmer than Turquoise Green. They are different kinds of paint.
The same difference applies the other way round: Turquoise Green is a little lighter, cooler.
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 Turquoise Green on the colour wheel See Hexwraith Flame on the colour wheel
All matches: Turquoise Green equivalents · Hexwraith Flame equivalents