blue-red vs lilac

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. 

lilac

adj
  • Having a pale purple colour. 

noun
  • A flower of the lilac shrub. 

  • A pale purple color, the color of some lilac flowers. 

  • A large shrub of the genus Syringa, especially Syringa vulgaris, bearing white, pale-pink, or purple flowers. 

How often have the words blue-red and lilac occurred in a corpus of books? (source: Google Ngram Viewer )