M. Graham Acrylic Color Cobalt Blue - 5 ounce (150 ml) M. Graham & Co. from $26.55 $44.25 Qty. Add to Cart SKU: GRM-52-090 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Pigment: Oxides of Cobalt and Aluminum (PB 28) - Lightfast Rating: Excellent (LF 1) - Opacity: Semi-Transparent Tweet