Product Information Lightfast 1 (1-Excellent, 2-Very Good, 3-Good, 4-Fair, V-Poor) Yellow Chartreuse PC 1004 RGB: 199,255,3 CMYK: 22,0,99,0 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.