Skavenblight Dinge vs Olive-Brown Ops

How close are they?

ΔE 16.1, loose: different enough that you should pick on purpose. Olive-Brown Ops is noticeably darker, more saturated than Skavenblight Dinge.

Can I use Olive-Brown Ops instead of Skavenblight Dinge?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Olive-Brown Ops is noticeably darker, more saturated than Skavenblight Dinge.

Can I use Skavenblight Dinge instead of Olive-Brown Ops?

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