Payne’s Grey Wash vs Umber Wash

How close are they?

ΔE 32.8, loose: different enough that you should pick on purpose. Umber Wash is noticeably lighter, warmer than Payne’s Grey Wash.

Can I use Umber Wash instead of Payne’s Grey Wash?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 33). Umber Wash is noticeably lighter, warmer than Payne’s Grey Wash.

Can I use Payne’s Grey Wash instead of Umber Wash?

The same difference applies the other way round: Payne’s Grey Wash is noticeably darker, 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.