ΔE 14.9, fair: the same colour family, but not a straight swap. Hydra Turquoise is noticeably darker, warmer than Psychotic Illusions.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Hydra Turquoise is noticeably darker, warmer than Psychotic Illusions.
The same difference applies the other way round: Psychotic Illusions is noticeably 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 Psychotic Illusions on the colour wheel See Hydra Turquoise on the colour wheel
All matches: Psychotic Illusions equivalents · Hydra Turquoise equivalents