/*
  cpt-city: nr/plr/harris-plr-13 (cpt)

  Schemes from Moses Harris’ coluor wheels in "The Natural System
  of Colours" (1766), recreated by Nicholas Rougeux 2025

  author: Nicholas Rougeux
  copyright: CC0 1.0
  year: 2025
  url: https://phillips.shef.ac.uk/pub/cpt-city/nr/plr
*/
linear-gradient(
  0deg,
  rgb(209, 219, 213)   0.000%,
  rgb(209, 219, 213)  10.000%,
  rgb(180, 199, 215)  10.000%,
  rgb(180, 199, 215)  20.000%,
  rgb(140, 170, 216)  20.000%,
  rgb(140, 170, 216)  30.000%,
  rgb(115, 151, 218)  30.000%,
  rgb(115, 151, 218)  40.000%,
  rgb( 91, 130, 219)  40.000%,
  rgb( 91, 130, 219)  50.000%,
  rgb( 71, 109, 218)  50.000%,
  rgb( 71, 109, 218)  60.000%,
  rgb( 55,  93, 217)  60.000%,
  rgb( 55,  93, 217)  70.000%,
  rgb( 32,  62, 208)  70.000%,
  rgb( 32,  62, 208)  80.000%,
  rgb( 15,  35, 194)  80.000%,
  rgb( 15,  35, 194)  90.000%,
  rgb(  3,   7, 171)  90.000%,
  rgb(  3,   7, 171) 100.000%
);