ΔE 47.8, loose: different enough that you should pick on purpose. Blue Wash is noticeably lighter, much more saturated, cooler than Andalusian Earth.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 48). Blue Wash is noticeably lighter, much more saturated, cooler than Andalusian Earth.
The same difference applies the other way round: Andalusian Earth is noticeably darker, much more muted, 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.
See Andalusian Earth on the colour wheel See Blue Wash on the colour wheel
All matches: Andalusian Earth equivalents · Blue Wash equivalents