cyan vs midnight blue

cyan

noun
  • A vibrant pale greenish-blue colour between blue and green in the visible spectrum; the complementary colour of red; the colour obtained by subtracting red from white light. 

adj
  • Of the colour cyan. 

midnight blue

noun
  • a dark blue colour, almost black. 

adj
  • of a dark blue colour, almost black. 

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