Guaranteed to be 100%; lightfast for up to 100 years under museum conditions, Derwent Lightfast Colored Pencils are professional-quality, oil-infused pencils with smooth, thick, creamy cores. They mix well with other media to create new colors. ASTM D6901-compliant. - Derwent Lightfast Colored Pencil - Set of 72Derwent Lightfast Pencils, 72 TIN - Includes one each of Banana, Sun Yellow, Champagne, Mustard, Amber Gold, Flame, Derwent Red, Strawberry, Scarlet, Cherry Red, Merlot, Pale Peach, Slamon, Dusky Pink, Oyster, Deep Rose, Purple, Mars Violet, Heather, Wild Lavender, Nightshade, Violet, Blue Violet, Mid Ultramarine, Deep Blue, Sapphire, Denim, Mid Blue (70%), Midnight Blue, Arctic, Dark Indigo, Ocean Blue Dark, Dark Turquoise, Light Aqua, Turquoise Green, Mallard Green, Vivid Green, Spruce Green, Pine, Racing Green, Grass Green, Grass Green (70%), Foliage, Forest, Olive Earth, Seaweed, Light Bronze, Brown Ochre, Yellow Ochre, Wheat, Sandsonte, Persian Orange, Burnt Sienna, Mars Orange, Sienna, Venetian Red, Ruby Earth, Sepia (Red), Natural Brown, Chocolate, Van Dyke Brown, Fossil Grey, Warm Grey, Moonstone, Granite, Platinum, Cloud Grey, Mist, Mars Black, Midnight Black, Black, and White.