olive green vs viridian

olive green

noun
  • A green-yellow hue that is brighter and greener than olive. 

adj
  • Having this hue. 

viridian

noun
  • A bluish-green color. 

  • A bluish-green pigment made from chromium sesquioxide. 

adj
  • Of a bluish green colour. 

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