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 generic term for slightly bluish-red colors that are between red and rose. It is the national color of Nepal. The color #DC143C, known as Crimson, was added to the X11 color system in 1999. It is part of the extended set of colors introduced with updates to the original X11 color specifications.