godan verb (-ru), intransitive verb
be dyed; take on color
Literal sense: something absorbs dye or color and changes its own color. Intransitive.
白い布がきれいな青色に染まった。
The white cloth was dyed a beautiful blue.
godan verb (-ru), intransitive verb
be stained; be tainted; be steeped in
Figurative extension: a person, mind, or thing becomes deeply influenced, corrupted, or filled with a quality, often negative. Common with 悪に染まる, 血に染まる, 考えに染まる.
彼は悪い仲間に染まってしまった。
He fell in with bad company and was corrupted.
戦場は血に染まった。
The battlefield was stained with blood.