Black Legion vs Willow Bark

How close are they?

ΔE 13.1, fair: the same colour family, but not a straight swap. Willow Bark is noticeably lighter, more saturated than Black Legion.

Can I use Willow Bark instead of Black Legion?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Willow Bark is noticeably lighter, more saturated than Black Legion.

Can I use Black Legion instead of Willow Bark?

The same difference applies the other way round: Black Legion is noticeably darker, more muted.

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.