Sanguine

Sanguine (/ˈsæŋɡwɪn/) or red chalk is chalk of a reddish-brown color, so called because it resembles the color of dried blood.^{[citation needed]} It has been popular for centuries for drawing (where white chalk only works on colored paper).^{[citation needed]} The word comes via French from the Italian sanguigna and originally from the Latin "sanguis".^{[citation needed]}