Cass Art Artists' Oil Colours are an extra fine professional grade Oil colour produced with the highest possible level of pigmentation. Ideal for blending and triple-milled to give their rich, buttery consistency also achieved through the use of a unique and natural formula. Each colour within this range offers excellent results with maximum lightfastness and permanence ratings. Compared with most Artists' Oil ranges the colours offer a slightly shorter drying time which is more consistent across all of the colours. Available in a range of 23 colours in 37ml tubes, 19 of which are produced from single-pure pigments. Click on a colour to add the item to your basket. Also available is our Cass Art Artists' Oil 10 x 37ml set, which provides the perfect introduction to this unparalleled range and offers fantastic value.