Drakenhof Nightshade vs Blue Wash

How close are they?

ΔE 44.1, loose: different enough that you should pick on purpose. Blue Wash is noticeably lighter, cooler than Drakenhof Nightshade.

✓ Two Thin Coats comparison chart lists these two as equivalents.

Can I use Blue Wash instead of Drakenhof Nightshade?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 44). Blue Wash is noticeably lighter, cooler than Drakenhof Nightshade.

Can I use Drakenhof Nightshade instead of Blue Wash?

The same difference applies the other way round: Drakenhof Nightshade is noticeably darker, 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.