I was googling around, and apparently there are some shirts marketed as "yinmn blue": https://www.scotch-soda.com/fi/en/men/shirts/long-sleeve-100-linen-shirt/

I was googling around, and apparently there are some shirts marketed as "yinmn blue": https://www.scotch-soda.com/fi/en/men/shirts/long-sleeve-100-linen-shirt/159416.html https://www.scotch-soda.com/fi/en/men/shirts/long-sleeve-100... I am somewhat dubious though if that is genuinely yinmn, but interesting nevertheless that they are marketing it as such.