Alizarin is a red dye that comes from a plant called madder. It is often used in the making of color pigments for artists and in the textile industry. Full definition
Next take an acrylic brush and load generously with alizarin crimson, and sweep over the red areas in one single movement. (arttutor.com)
Next, create ranges of violet, using each possible combination of the different blue and red co-primaries - start with alizarin crimson and ultramarine blue, which both have violet overtones. (theguardian.com)
The cadmium base was a bit too shocking, and so by removing excess paint and then softly scraping a layer of alizarin crimson over it, the colour is infinitely richer. (arttutor.com)