Royal vs dark blue

Royal

noun
  • A member of the first regiment of foot in the British army. 

  • someone connected with Reading Football Club, as a fan, player, coach etc. 

name
  • A male given name from English from the surname 

  • A surname from Old English. 

  • A male given name from the word "royal". 

dark blue

noun
  • A member of the Oxford rowing team. 

  • A deep, dim blue colour: navy or similar. 

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