Derwent Lightfast pencils have been formulated to be 100% lightfast. The revolutionary core is resistant to prolonged colour change ensuring artwork will not fade for up to 100 years under museum conditions.100% Lightfast, all colours are professional quality and comply with ASTM 6901 and Blue Wool Scale ISO 105Revolutionary Oil-Based core which creates rich vibrant colourColours can be mixed on the page to create a paint-like effectStrong point for detailed drawing and layering techniquesA rich colour selection, with quick and opaque colour laydownDerwent Lightfast Pencils are available in a range of 100 coloursColours include: Banana, Sun Yellow, Champagne, Mustard, Amber Gold, Flame, Derwent Red, Strawberry, Scarlet , Cherry Red, Merlot, Flesh Pink, Salmon, 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, Sandstone, 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, White.Derwent artist materials are synonymous with quality, craftsmanship and innovation. With a heritage dating back to 1832, Derwent’s innovation comes from a deep understanding of the needs and requirements of artists at every stage of the creative journey. Perfecting the art of pencil manufacturing in the Lake District for generations.