/*
  cpt-city: km/blue-tan-d15 (cpt)

  Diverging Color Maps for Scientific Visualization, Kenneth
  Moreland. ISVC '09: Proceedings of the 5th International
  Symposium on Advances in Visual Computing: Part II pp, 92-103

  author: Kenneth Moreland
  copyright: Public domain
  year: 2012
  url: https://phillips.shef.ac.uk/pub/cpt-city/km
*/
linear-gradient(
  0deg,
  rgb( 61, 142, 234)   0.000%,
  rgb( 61, 142, 234)   6.667%,
  rgb( 75, 157, 237)   6.667%,
  rgb( 75, 157, 237)  13.333%,
  rgb( 92, 172, 239)  13.333%,
  rgb( 92, 172, 239)  20.000%,
  rgb(112, 186, 238)  20.000%,
  rgb(112, 186, 238)  26.667%,
  rgb(135, 198, 236)  26.667%,
  rgb(135, 198, 236)  33.333%,
  rgb(162, 209, 232)  33.333%,
  rgb(162, 209, 232)  40.000%,
  rgb(191, 217, 228)  40.000%,
  rgb(191, 217, 228)  46.667%,
  rgb(223, 223, 223)  46.667%,
  rgb(223, 223, 223)  53.333%,
  rgb(226, 221, 191)  53.333%,
  rgb(226, 221, 191)  60.000%,
  rgb(226, 214, 159)  60.000%,
  rgb(226, 214, 159)  66.667%,
  rgb(223, 204, 127)  66.667%,
  rgb(223, 204, 127)  73.333%,
  rgb(217, 190,  98)  73.333%,
  rgb(217, 190,  98)  80.000%,
  rgb(208, 174,  72)  80.000%,
  rgb(208, 174,  72)  86.667%,
  rgb(195, 155,  50)  86.667%,
  rgb(195, 155,  50)  93.333%,
  rgb(181, 136,  32)  93.333%,
  rgb(181, 136,  32) 100.000%
);