blue-red vs purpure

blue-red

adj

  • Of a colour between blue and red; purple or crimson. 

  • Consisting of the colours blue and red individually. 

noun

  • A colour between blue and red; purple or crimson. 

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 blue-red and purpure occurred in a corpus of books? (source: Google Ngram Viewer )