Crow Hue vs Coal Black

How close are they?

ΔE 15.0, loose: different enough that you should pick on purpose. Coal Black is a little lighter, much more saturated than Crow Hue.

Can I use Coal Black instead of Crow Hue?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Coal Black is a little lighter, much more saturated than Crow Hue.

Can I use Crow Hue instead of Coal Black?

The same difference applies the other way round: Crow Hue is a little darker, much 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.