ΔE 8.3, close: similar, with a visible difference side by side. Sylvaneth Bark is a little darker, warmer than MERDC Sand (FS30277).
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Sylvaneth Bark is a little darker, warmer than MERDC Sand (FS30277).
The same difference applies the other way round: MERDC Sand (FS30277) is a little lighter, cooler.
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 MERDC Sand (FS30277) on the colour wheel See Sylvaneth Bark on the colour wheel
All matches: MERDC Sand (FS30277) equivalents · Sylvaneth Bark equivalents