pastel blue pigment
pastel blue pigment . a slightly greyish blue pigment similar to Lectoure pastel blue (which is an organic-based pigment) when mixed with a white binder, such as lime, at a 20% dosage. With a transparent binder, it gives the colour of charette blue, used in the past to paint carriages to repel insects. This pigment has a good colouring power and can be diluted in water with a little liquid black soap. This pigment is compatible with all painting and plastering techniques.