Product Information Lightfast 4 (1-Excellent, 2-Very Good, 3-Good, 4-Fair, V-Poor) Dark Purple PC 931 RGB: 92,42,107 CMYK: 52,78,44,25 Artists' quality colored pencils for every level of expertise. High quality pigments for a rich color saturation. Soft, thick cores create a smooth color laydown for superior blending and shading. Thick leads resist breakage.