ΔE 11.1, fair: the same colour family, but not a straight swap. Signal Blue is a little darker, more muted, warmer than Raptor Shuttle Turquoise.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Signal Blue is a little darker, more muted, warmer than Raptor Shuttle Turquoise.
The same difference applies the other way round: Raptor Shuttle Turquoise is a little lighter, more saturated, 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 Raptor Shuttle Turquoise on the colour wheel See Signal Blue on the colour wheel
All matches: Raptor Shuttle Turquoise equivalents · Signal Blue equivalents