low-key vs pastel

low-key

adv
  • Kind of. 

  • In a low-key or surreptitious manner; secretively; on the down-low. 

adj
  • Dark; characterised by dark tones and muted colours. 

  • Restrained, subtle, not trying to attract attention. 

pastel

noun
  • A traditional dish in various Latin American countries, resembling a tamale, pasty, or calzone. 

  • Any of several subdued tints of colors, usually associated with pink, peach, yellow, green, blue, and lavender 

  • A drawing made with any of those colors. 

  • A type of dried paste used to make crayons. 

  • A crayon made from such a paste. 

  • Woad. 

How often have the words low-key and pastel occurred in a corpus of books? (source: Google Ngram Viewer )