Sylvaneth Bark vs Thornwood Green

How close are they?

ΔE 16.7, loose: different enough that you should pick on purpose. Thornwood Green is more muted, cooler than Sylvaneth Bark.

Can I use Thornwood Green instead of Sylvaneth Bark?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Thornwood Green is more muted, cooler than Sylvaneth Bark.

Can I use Sylvaneth Bark instead of Thornwood Green?

The same difference applies the other way round: Sylvaneth Bark is 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.