A mixture of Prussian blue with extenders. Haarlem blue is more commonly called Antwerp blue. The extenders were alumina, magnesia, and/or zinc oxide. Other colors called Haarlem ultramarine and Haarlem ashes are manufactured blues and may be of the same composition.
Synonyms and Related Terms
Antwerp blue; Haarlem ultramarine; Haarlem ashes
Sources Checked for Data in Record
- Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
- R.D. Harley, Artists' Pigments c. 1600-1835, Butterworth Scientific, London, 1982