Scarlet

Scarlet (from the Persian säqirlāt) is a red color with a hue that is somewhat toward the orange. It is a pure chroma on the color wheel. It is redder than vermilion. Traditionally, scarlet is the color of flame. It may also refer to the color of the blood of a living person. Scarlet is made of red and orange. The emission spectra for compounds of strontium are considered to be in the scarlet red area of the visible light spectrum. The emission line occur at 640.8 nm, 650.4 nm, 687.8 nm and... full article at wikipedia