Crimsonis a rich, deep red color, inclining to purple.It originally meant the color of the kermes dye produced from a scale insect, Kermes vermilio, but the name is now sometimes also used as a general term for slightly bluish-red colors that are between red and rose.深紅是一種濃郁的深紅色,傾向於紫色。它是尼泊爾的國家顏色。顏色 #DC143C,被稱為 Crimson,於 1999 年加入 X11 顏色系統。它是原始 X11 顏色規格更新時引入的擴展顏色集的一部分。