Definitions of scarlet:

• noun:   a variable color that is vivid red but sometimes with an orange tinge
• adjective:   having any of numerous bright or strong colors reminiscent of the color of blood or cherries or tomatoes or rubies
• name:  A female given name (rare: 1 in 50000 females; popularity rank in the U.S.: #2671)
• name:  A surname (very rare: popularity rank in the U.S.: #54438)