ΔE 14.8, fair: the same colour family, but not a straight swap. Fluorescent Cold Green is noticeably darker, more muted than Fluor Turquoise.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Fluorescent Cold Green is noticeably darker, more muted than Fluor Turquoise.
The same difference applies the other way round: Fluor Turquoise is noticeably lighter, more saturated.
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 Fluor Turquoise on the colour wheel See Fluorescent Cold Green on the colour wheel
All matches: Fluor Turquoise equivalents · Fluorescent Cold Green equivalents