Winsor & Newton Professional Water Colour Paint, 5ml tube, Winsor Blue (Green Shade) The finest water color offering the widest choice of pigments & the highest possible permanence Series: 1/Color Code: 707/Color Index: PB 15 Permanence: A/Opacity: Transparent Includes a 0.17oz/5ml tube of Winsor & Newton Professional Water Color Conforms to ASTM D4236