Watersoluble ink blocks that bring a new sense of freedom to the drawing and painting experience, Derwent Inktense Blocks can be used dry or wet. Dry, they deliver pure, vibrant color. When wet, they create a translucent ink-like paint that can be worked over when dry. - Derwent Inktense Block Set - Set of 24Colart Derwent Inktense Blocks, 24/CT TIN - This set of 24 Derwent Inktense Blocks includes one each of the colors Sherbet Lemon, Sun Yellow, Tangerine, Poppy Red, Chilli Red, Shiraz, Fuchsia, Violet, Iris Blue, Bright Blue, Deep Indigo, Sea Blue, Teal Green, Ionian Green, Apple Green, Field Green, Leaf Green, Mustard, Baked Earth, Willow, Bark, Charcoal Grey, Ink Black, and Antique White.