Koigu KPPM substitution

There’s a baby blanket I really want to knit, but it requires Koigu’s KPPPM. I absolutely LOVE the colors, but it’s a bit expensive… :frowning: It would also be nice it the yarn was machine washable AND soft. The pattern says to knit with two strands held together. Any ideas on what I could use instead that would give a comparable result? I know, I’m probably asking for much… :oops:

I would try a Merino superwash sock yarn–they seen really similar to Koigu to me.