Opel Oriental Blue (paint code 21Z) is an OEM factory metallic paint color used on the ASTRA, CORSA, MERIVA. This color was available from the factory in: 2009, 2010, 2011, 2012, 2013. It is also known as Royalblau. The base color family is Blue. Use this code when ordering touch-up paint, spray cans, or body shop refinishing products to ensure an exact OEM color match.