ΔE 21.5, loose: different enough that you should pick on purpose. Sea Blue is a little darker, cooler than Dewpath.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Sea Blue is a little darker, cooler than Dewpath.
The same difference applies the other way round: Dewpath is a little 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 Dewpath on the colour wheel See Sea Blue on the colour wheel
All matches: Dewpath equivalents · Sea Blue equivalents