IDF Sand Grey 1970s-1980s vs Sylvaneth Bark

How close are they?

ΔE 11.0, fair: the same colour family, but not a straight swap. Sylvaneth Bark is warmer than IDF Sand Grey 1970s-1980s.

Can I use Sylvaneth Bark instead of IDF Sand Grey 1970s-1980s?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Sylvaneth Bark is warmer than IDF Sand Grey 1970s-1980s.

Can I use IDF Sand Grey 1970s-1980s instead of Sylvaneth Bark?

The same difference applies the other way round: IDF Sand Grey 1970s-1980s is 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.