ΔE 12.0, fair: the same colour family, but not a straight swap. Mythic Turquoise is noticeably lighter, more muted than Dewpath.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Mythic Turquoise is noticeably lighter, more muted than Dewpath.
The same difference applies the other way round: Dewpath is noticeably darker, more saturated.
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 Dewpath on the colour wheel See Mythic Turquoise on the colour wheel
All matches: Dewpath equivalents · Mythic Turquoise equivalents