ΔE 17.0, loose: different enough that you should pick on purpose. Light Turquois (Phthalo) is a little lighter, more saturated, cooler than Exile Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Turquois (Phthalo) is a little lighter, more saturated, cooler than Exile Green.
The same difference applies the other way round: Exile Green is a little darker, 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 Exile Green on the colour wheel See Light Turquois (Phthalo) on the colour wheel
All matches: Exile Green equivalents · Light Turquois (Phthalo) equivalents