Skavenblight Dinge vs Black Leather

How close are they?

ΔE 15.2, loose: different enough that you should pick on purpose. Black Leather is noticeably darker, cooler than Skavenblight Dinge.

Can I use Black Leather instead of Skavenblight Dinge?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Black Leather is noticeably darker, cooler than Skavenblight Dinge.

Can I use Skavenblight Dinge instead of Black Leather?

The same difference applies the other way round: Skavenblight Dinge is noticeably lighter, warmer.

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.