magenta vs purpure

magenta

adj
  • having the colour of fuchsia, fuchsine, light purple. 

noun
  • A vibrant light purple, purplish-red, reddish-purple, or pinkish purple colour obtained by mixing red and blue light (thus a secondary colour), but primary in the CMYK colour system used in printing. 

purpure

adj
  • In blazon, of the colour purple. 

noun
  • A purple colour on a coat of arms, represented in engraving by diagonal parallel lines 45 degrees clockwise. 

  • purpure 

How often have the words magenta and purpure occurred in a corpus of books? (source: Google Ngram Viewer )