One's face turning pale or ashen; used when someone looks drained of color from shock, illness, or anemia.
悪い知らせを聞いて彼は顔面蒼白になった。
He went pale when he heard the bad news.
検査の結果、貧血で顔面蒼白だと言われた。
The test results said I was anemic and looked pale.
試験の結果が悪く、顔面蒼白で部屋を出て行った。
He left the room looking pale after seeing the exam results.