ΔE 14.8, fair: the same colour family, but not a straight swap. Faded P.R.U. Blue is noticeably lighter, more muted, cooler than Marine Teal.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Faded P.R.U. Blue is noticeably lighter, more muted, cooler than Marine Teal.
The same difference applies the other way round: Marine Teal 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 Marine Teal on the colour wheel See Faded P.R.U. Blue on the colour wheel
All matches: Marine Teal equivalents · Faded P.R.U. Blue equivalents