/*
  cpt-city: ncl/BlueDarkRed18 (cpt)

  Colour-tables from NCL (NCAR Command Language), an open-source
  interpreted language designed specifically for scientific data
  analysis and visualisation

  author: University Corporation for Atmospheric Research (UCAR)
  copyright: Custom open-source
  year: 2011
  url: https://phillips.shef.ac.uk/pub/cpt-city/ncl
*/
linear-gradient(
  0deg,
  rgb( 36,   0, 216)   0.000%,
  rgb( 36,   0, 216)   5.556%,
  rgb( 24,  28, 247)   5.556%,
  rgb( 24,  28, 247)  11.111%,
  rgb( 40,  87, 255)  11.111%,
  rgb( 40,  87, 255)  16.667%,
  rgb( 61, 135, 255)  16.667%,
  rgb( 61, 135, 255)  22.222%,
  rgb( 86, 176, 255)  22.222%,
  rgb( 86, 176, 255)  27.778%,
  rgb(117, 211, 255)  27.778%,
  rgb(117, 211, 255)  33.333%,
  rgb(153, 234, 255)  33.333%,
  rgb(153, 234, 255)  38.889%,
  rgb(188, 249, 255)  38.889%,
  rgb(188, 249, 255)  44.444%,
  rgb(234, 255, 255)  44.444%,
  rgb(234, 255, 255)  50.000%,
  rgb(255, 255, 234)  50.000%,
  rgb(255, 255, 234)  55.556%,
  rgb(255, 241, 188)  55.556%,
  rgb(255, 241, 188)  61.111%,
  rgb(255, 214, 153)  61.111%,
  rgb(255, 214, 153)  66.667%,
  rgb(255, 172, 117)  66.667%,
  rgb(255, 172, 117)  72.222%,
  rgb(255, 120,  86)  72.222%,
  rgb(255, 120,  86)  77.778%,
  rgb(255,  61,  61)  77.778%,
  rgb(255,  61,  61)  83.333%,
  rgb(247,  39,  53)  83.333%,
  rgb(247,  39,  53)  88.889%,
  rgb(216,  21,  47)  88.889%,
  rgb(216,  21,  47)  94.444%,
  rgb(165,   0,  33)  94.444%,
  rgb(165,   0,  33) 100.000%
);