The Collaborative International Dictionary
Saxon blue
Saxon \Sax"on\, a. Of or pertaining to the Saxons, their country, or their language. (b) Anglo-Saxon. (c) Of or pertaining to Saxony or its inhabitants.
Saxon blue (Dyeing), a deep blue liquid used in dyeing, and
obtained by dissolving indigo in concentrated sulphuric
acid.
--Brande & C.
Saxon green (Dyeing), a green color produced by dyeing with yellow upon a ground of Saxon blue.