English to English

noun (n)

• interest and variety and intensity(noun.attribute)

  Example:
  The characters were delineated with exceptional vividness.
  

  Synonym:
  color, colour
  

  source: wordnet30
• chromatic purity: freedom from dilution with white and hence vivid in hue(noun.attribute)

  Synonym:
  chroma, intensity, saturation
  

  source: wordnet30