ΔE 21.6, loose: different enough that you should pick on purpose. Light Blue is noticeably lighter, more muted, cooler than Psychic Shock.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Light Blue is noticeably lighter, more muted, cooler than Psychic Shock.
The same difference applies the other way round: Psychic Shock is noticeably darker, more saturated, 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 Psychic Shock on the colour wheel See Light Blue on the colour wheel
All matches: Psychic Shock equivalents · Light Blue equivalents