/*
  cpt-city: gmt/GMT_abyss (cpt)

  Palettes distributed with the Generic Mapping Tools (GMT)

  author: Paul Wessel, Walter Smith, Andreas Trawoeger
  copyright: GPLv2
  year: 2004, 2010
  url: https://phillips.shef.ac.uk/pub/cpt-city/gmt
*/
linear-gradient(
  0deg,
  rgb(  0,   0,   0)   0.000%,
  rgb( 20,  30,  53)  12.500%,
  rgb( 38,  60, 106)  25.000%,
  rgb( 46,  80, 133)  37.500%,
  rgb( 53,  99, 160)  50.000%,
  rgb( 72, 151, 211)  62.500%,
  rgb( 90, 185, 233)  75.000%,
  rgb(141, 210, 239)  87.500%,
  rgb(245, 255, 255) 100.000%
);