/*
  cpt-city: pd/astro/mars_sand_dunes01 (cpt)

  Gradients from photographs

  author: Piecrust Design
  copyright: Public domain
  year: 2007
  url: https://phillips.shef.ac.uk/pub/cpt-city/pd/astro
*/
linear-gradient(
  0deg,
  rgb( 19,  26,  38)   0.000%,
  rgb( 18,  25,  36)   2.080%,
  rgb( 18,  24,  33)   4.170%,
  rgb( 18,  25,  34)   6.250%,
  rgb( 19,  26,  36)   8.330%,
  rgb( 24,  30,  41)  10.420%,
  rgb( 28,  34,  46)  12.500%,
  rgb( 32,  38,  50)  14.580%,
  rgb( 36,  43,  55)  16.670%,
  rgb( 42,  52,  67)  18.750%,
  rgb( 48,  61,  79)  20.830%,
  rgb( 67,  84, 104)  22.920%,
  rgb( 87, 106, 129)  25.000%,
  rgb(104, 121, 140)  27.080%,
  rgb(122, 137, 152)  29.170%,
  rgb(120, 132, 142)  31.250%,
  rgb(118, 126, 133)  33.330%,
  rgb(106, 117, 127)  35.420%,
  rgb( 95, 108, 120)  37.500%,
  rgb( 91, 102, 114)  39.580%,
  rgb( 86,  97, 109)  41.670%,
  rgb( 78,  90, 104)  43.750%,
  rgb( 70,  82,  98)  45.830%,
  rgb( 68,  81,  98)  47.920%,
  rgb( 65,  79,  98)  50.000%,
  rgb( 62,  77,  96)  52.080%,
  rgb( 60,  74,  93)  54.170%,
  rgb( 60,  74,  92)  56.250%,
  rgb( 60,  74,  92)  58.330%,
  rgb( 60,  74,  91)  60.420%,
  rgb( 60,  73,  91)  62.500%,
  rgb( 61,  74,  91)  64.580%,
  rgb( 61,  74,  90)  66.670%,
  rgb( 62,  75,  91)  68.750%,
  rgb( 63,  76,  92)  70.830%,
  rgb( 64,  76,  91)  72.920%,
  rgb( 65,  77,  91)  75.000%,
  rgb( 67,  78,  92)  77.080%,
  rgb( 68,  80,  93)  79.170%,
  rgb( 69,  81,  95)  81.250%,
  rgb( 70,  82,  96)  83.330%,
  rgb( 71,  83,  97)  85.420%,
  rgb( 72,  84,  98)  87.500%,
  rgb( 74,  85, 101)  89.580%,
  rgb( 75,  87, 103)  91.670%,
  rgb( 75,  87, 104)  93.750%,
  rgb( 75,  88, 105)  95.830%,
  rgb( 76,  89, 106)  97.920%,
  rgb( 77,  90, 107) 100.000%
);