/*
  cpt-city: jm/ad/ad-c (cpt)

  Abysmal Deep

  From teal colored shallows through darker and darker blues
  until all detail is lost in the black stygian depths.

  author: Jim Mossman
  copyright: Attribution required
  year: 2005
  url: https://phillips.shef.ac.uk/pub/cpt-city/jm/ad
*/
linear-gradient(
  0deg,
  rgb(  0,   0,   3)   0.000%,
  rgb(  0,   0,   3)   1.852%,
  rgb(  0,   2,   8)   1.852%,
  rgb(  0,   2,   8)   3.704%,
  rgb(  2,   4,  13)   3.704%,
  rgb(  2,   4,  13)   5.556%,
  rgb(  3,   6,  18)   5.556%,
  rgb(  3,   6,  18)   7.407%,
  rgb(  5,   8,  23)   7.407%,
  rgb(  5,   8,  23)   9.259%,
  rgb(  7,  11,  28)   9.259%,
  rgb(  7,  11,  28)  11.111%,
  rgb(  9,  13,  33)  11.111%,
  rgb(  9,  13,  33)  12.963%,
  rgb( 11,  16,  38)  12.963%,
  rgb( 11,  16,  38)  14.815%,
  rgb( 14,  19,  43)  14.815%,
  rgb( 14,  19,  43)  16.667%,
  rgb( 17,  22,  48)  16.667%,
  rgb( 17,  22,  48)  18.518%,
  rgb( 20,  26,  53)  18.518%,
  rgb( 20,  26,  53)  20.370%,
  rgb( 23,  29,  58)  20.370%,
  rgb( 23,  29,  58)  22.222%,
  rgb( 25,  32,  63)  22.222%,
  rgb( 25,  32,  63)  24.074%,
  rgb( 29,  36,  68)  24.074%,
  rgb( 29,  36,  68)  25.926%,
  rgb( 32,  39,  73)  25.926%,
  rgb( 32,  39,  73)  27.778%,
  rgb( 36,  43,  78)  27.778%,
  rgb( 36,  43,  78)  29.630%,
  rgb( 39,  46,  83)  29.630%,
  rgb( 39,  46,  83)  31.482%,
  rgb( 47,  57,  98)  31.482%,
  rgb( 47,  57,  98)  33.333%,
  rgb( 45,  53,  93)  33.333%,
  rgb( 45,  53,  93)  35.185%,
  rgb( 58,  67, 118)  35.185%,
  rgb( 58,  67, 118)  37.037%,
  rgb( 54,  63, 113)  37.037%,
  rgb( 54,  63, 113)  38.889%,
  rgb( 54,  64, 117)  38.889%,
  rgb( 54,  64, 117)  40.741%,
  rgb( 51,  60, 111)  40.741%,
  rgb( 51,  60, 111)  42.593%,
  rgb( 52,  60, 115)  42.593%,
  rgb( 52,  60, 115)  44.444%,
  rgb( 52,  63, 119)  44.444%,
  rgb( 52,  63, 119)  46.296%,
  rgb( 53,  63, 123)  46.296%,
  rgb( 53,  63, 123)  48.148%,
  rgb( 57,  65, 128)  48.148%,
  rgb( 57,  65, 128)  50.000%,
  rgb( 61,  69, 133)  50.000%,
  rgb( 61,  69, 133)  51.852%,
  rgb( 65,  74, 138)  51.852%,
  rgb( 65,  74, 138)  53.704%,
  rgb( 69,  77, 143)  53.704%,
  rgb( 69,  77, 143)  55.556%,
  rgb( 72,  82, 148)  55.556%,
  rgb( 72,  82, 148)  57.407%,
  rgb( 76,  87, 153)  57.407%,
  rgb( 76,  87, 153)  59.259%,
  rgb( 76,  92, 153)  59.259%,
  rgb( 76,  92, 153)  61.111%,
  rgb( 76,  94, 153)  61.111%,
  rgb( 76,  94, 153)  62.963%,
  rgb( 76,  98, 153)  62.963%,
  rgb( 76,  98, 153)  64.815%,
  rgb( 76,  99, 153)  64.815%,
  rgb( 76,  99, 153)  66.667%,
  rgb( 76, 105, 153)  66.667%,
  rgb( 76, 105, 153)  68.519%,
  rgb( 76, 107, 153)  68.519%,
  rgb( 76, 107, 153)  70.370%,
  rgb( 76, 110, 153)  70.370%,
  rgb( 76, 110, 153)  72.222%,
  rgb( 76, 117, 153)  72.222%,
  rgb( 76, 117, 153)  74.074%,
  rgb( 76, 121, 153)  74.074%,
  rgb( 76, 121, 153)  75.926%,
  rgb( 76, 125, 153)  75.926%,
  rgb( 76, 125, 153)  77.778%,
  rgb( 76, 130, 153)  77.778%,
  rgb( 76, 130, 153)  79.630%,
  rgb( 76, 134, 153)  79.630%,
  rgb( 76, 134, 153)  81.481%,
  rgb( 76, 137, 153)  81.481%,
  rgb( 76, 137, 153)  83.333%,
  rgb( 76, 143, 153)  83.333%,
  rgb( 76, 143, 153)  85.185%,
  rgb( 74, 148, 153)  85.185%,
  rgb( 74, 148, 153)  87.037%,
  rgb( 72, 152, 153)  87.037%,
  rgb( 72, 152, 153)  88.889%,
  rgb( 69, 153, 153)  88.889%,
  rgb( 69, 153, 153)  90.741%,
  rgb( 69, 153, 148)  90.741%,
  rgb( 69, 153, 148)  92.593%,
  rgb( 69, 153, 144)  92.593%,
  rgb( 69, 153, 144)  94.444%,
  rgb( 69, 153, 138)  94.444%,
  rgb( 69, 153, 138)  96.296%,
  rgb( 69, 153, 134)  96.296%,
  rgb( 69, 153, 134)  98.148%,
  rgb( 69, 153, 130)  98.148%,
  rgb( 69, 153, 130) 100.000%
);