ΔE 10.0, fair: the same colour family, but not a straight swap. Bright Sapphire is a little lighter, cooler than Turquoise.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Bright Sapphire is a little lighter, cooler than Turquoise.
The same difference applies the other way round: Turquoise is a little darker, 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 Turquoise on the colour wheel See Bright Sapphire on the colour wheel
All matches: Turquoise equivalents · Bright Sapphire equivalents