ΔE 12.9, fair: the same colour family, but not a straight swap. Turquoise is noticeably darker, cooler than Ray Gun Glow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Turquoise is noticeably darker, cooler than Ray Gun Glow.
The same difference applies the other way round: Ray Gun Glow is noticeably lighter, 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 Ray Gun Glow on the colour wheel See Turquoise on the colour wheel
All matches: Ray Gun Glow equivalents · Turquoise equivalents