Druchii Violet vs Umber Wash

How close are they?

ΔE 45.1, loose: different enough that you should pick on purpose. Umber Wash is noticeably lighter, much more muted, warmer than Druchii Violet.

Can I use Umber Wash instead of Druchii Violet?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 45). Umber Wash is noticeably lighter, much more muted, warmer than Druchii Violet.

Can I use Druchii Violet instead of Umber Wash?

The same difference applies the other way round: Druchii Violet is noticeably darker, much more saturated, cooler.

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.