Product Information Lightfast 1 (1-Excellent, 2-Very Good, 3-Good, 4-Fair, V-Poor) Cool Grey 10% PC 1059 RGB: 247,252,252 CMYK: 3,1,1,0 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.