Evergreen Fog vs Gravedigger Denim

How close are they?

ΔE 15.4, loose: different enough that you should pick on purpose. Gravedigger Denim is a little darker, more muted than Evergreen Fog.

Can I use Gravedigger Denim instead of Evergreen Fog?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Gravedigger Denim is a little darker, more muted than Evergreen Fog.

Can I use Evergreen Fog instead of Gravedigger Denim?

The same difference applies the other way round: Evergreen Fog is a little lighter, more saturated.

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.