ΔE 19.3, loose: different enough that you should pick on purpose. Ray Gun Glow is noticeably darker, more saturated, warmer than Bright Sapphire.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Ray Gun Glow is noticeably darker, more saturated, warmer than Bright Sapphire.
The same difference applies the other way round: Bright Sapphire is noticeably lighter, more muted, 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 Bright Sapphire on the colour wheel See Ray Gun Glow on the colour wheel
All matches: Bright Sapphire equivalents · Ray Gun Glow equivalents