The monochrome colors of sanguine and sepia are the artist's traditional colors. Enhanced with white and with the shadows deepened with bistre and black, they lend vitality, liveliness and expression to the drawing. The richly pigmented Pitt® Monochrome Crayons harken back to this long tradition of figure drawing, which is why the crayons, designed for sketching are harder than conventional pastel crayons. For this reason, the lines do not disappear completely when smudged. Crayons are ideal for detail drawings and also for large areas. Excellent lightfastness. Available individually or in assorted sets.