/*
  cpt-city: jm/ad/ad-e (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,   9)   0.000%,
  rgb(  0,   0,   9)   1.695%,
  rgb(  0,   0,  14)   1.695%,
  rgb(  0,   0,  14)   3.390%,
  rgb(  0,   0,  19)   3.390%,
  rgb(  0,   0,  19)   5.085%,
  rgb(  0,   0,  24)   5.085%,
  rgb(  0,   0,  24)   6.780%,
  rgb(  0,   2,  29)   6.780%,
  rgb(  0,   2,  29)   8.475%,
  rgb(  2,   4,  34)   8.475%,
  rgb(  2,   4,  34)  10.169%,
  rgb(  4,   9,  39)  10.169%,
  rgb(  4,   9,  39)  11.864%,
  rgb(  6,  12,  44)  11.864%,
  rgb(  6,  12,  44)  13.559%,
  rgb(  9,  15,  49)  13.559%,
  rgb(  9,  15,  49)  15.254%,
  rgb( 12,  18,  54)  15.254%,
  rgb( 12,  18,  54)  16.949%,
  rgb( 14,  22,  59)  16.949%,
  rgb( 14,  22,  59)  18.644%,
  rgb( 18,  25,  64)  18.644%,
  rgb( 18,  25,  64)  20.339%,
  rgb( 21,  28,  69)  20.339%,
  rgb( 21,  28,  69)  22.034%,
  rgb( 24,  32,  74)  22.034%,
  rgb( 24,  32,  74)  23.729%,
  rgb( 20,  26,  59)  23.729%,
  rgb( 20,  26,  59)  25.424%,
  rgb( 24,  30,  64)  25.424%,
  rgb( 24,  30,  64)  27.119%,
  rgb( 35,  43,  89)  27.119%,
  rgb( 35,  43,  89)  28.814%,
  rgb( 38,  47,  94)  28.814%,
  rgb( 38,  47,  94)  30.509%,
  rgb( 42,  51,  99)  30.509%,
  rgb( 42,  51,  99)  32.203%,
  rgb( 46,  55, 104)  32.203%,
  rgb( 46,  55, 104)  33.898%,
  rgb( 50,  59, 109)  33.898%,
  rgb( 50,  59, 109)  35.593%,
  rgb( 54,  63, 114)  35.593%,
  rgb( 54,  63, 114)  37.288%,
  rgb( 58,  67, 119)  37.288%,
  rgb( 58,  67, 119)  38.983%,
  rgb( 60,  70, 124)  38.983%,
  rgb( 60,  70, 124)  40.678%,
  rgb( 63,  73, 129)  40.678%,
  rgb( 63,  73, 129)  42.373%,
  rgb( 64,  73, 134)  42.373%,
  rgb( 64,  73, 134)  44.068%,
  rgb( 64,  74, 138)  44.068%,
  rgb( 64,  74, 138)  45.763%,
  rgb( 65,  75, 142)  45.763%,
  rgb( 65,  75, 142)  47.458%,
  rgb( 66,  76, 146)  47.458%,
  rgb( 66,  76, 146)  49.153%,
  rgb( 66,  77, 150)  49.153%,
  rgb( 66,  77, 150)  50.847%,
  rgb( 67,  76, 154)  50.847%,
  rgb( 67,  76, 154)  52.542%,
  rgb( 71,  80, 159)  52.542%,
  rgb( 71,  80, 159)  54.237%,
  rgb( 75,  85, 164)  54.237%,
  rgb( 75,  85, 164)  55.932%,
  rgb( 79,  89, 169)  55.932%,
  rgb( 79,  89, 169)  57.627%,
  rgb( 84,  94, 174)  57.627%,
  rgb( 84,  94, 174)  59.322%,
  rgb( 87,  97, 179)  59.322%,
  rgb( 87,  97, 179)  61.017%,
  rgb( 92, 102, 184)  61.017%,
  rgb( 92, 102, 184)  62.712%,
  rgb( 92, 109, 184)  62.712%,
  rgb( 92, 109, 184)  64.407%,
  rgb( 92, 111, 184)  64.407%,
  rgb( 92, 111, 184)  66.102%,
  rgb( 92, 115, 184)  66.102%,
  rgb( 92, 115, 184)  67.797%,
  rgb( 92, 117, 184)  67.797%,
  rgb( 92, 117, 184)  69.492%,
  rgb( 92, 124, 184)  69.492%,
  rgb( 92, 124, 184)  71.186%,
  rgb( 92, 128, 184)  71.186%,
  rgb( 92, 128, 184)  72.881%,
  rgb( 92, 132, 184)  72.881%,
  rgb( 92, 132, 184)  74.576%,
  rgb( 92, 139, 184)  74.576%,
  rgb( 92, 139, 184)  76.271%,
  rgb( 92, 143, 184)  76.271%,
  rgb( 92, 143, 184)  77.966%,
  rgb( 92, 148, 184)  77.966%,
  rgb( 92, 148, 184)  79.661%,
  rgb( 92, 154, 184)  79.661%,
  rgb( 92, 154, 184)  81.356%,
  rgb( 92, 159, 184)  81.356%,
  rgb( 92, 159, 184)  83.051%,
  rgb( 92, 163, 184)  83.051%,
  rgb( 92, 163, 184)  84.746%,
  rgb( 92, 169, 184)  84.746%,
  rgb( 92, 169, 184)  86.441%,
  rgb( 89, 176, 184)  86.441%,
  rgb( 89, 176, 184)  88.136%,
  rgb( 86, 180, 184)  88.136%,
  rgb( 86, 180, 184)  89.831%,
  rgb( 83, 184, 184)  89.831%,
  rgb( 83, 184, 184)  91.525%,
  rgb( 83, 184, 177)  91.525%,
  rgb( 83, 184, 177)  93.220%,
  rgb( 83, 184, 173)  93.220%,
  rgb( 83, 184, 173)  94.915%,
  rgb( 83, 184, 166)  94.915%,
  rgb( 83, 184, 166)  96.610%,
  rgb( 83, 184, 161)  96.610%,
  rgb( 83, 184, 161)  98.305%,
  rgb( 83, 184, 156)  98.305%,
  rgb( 83, 184, 156) 100.000%
);