/*
  cpt-city: ds9/standard (cpt)

  The palettes used in the DS9 astronomical data visualization tool
  by William Joye of the Smithsonian Astrophysical Observatory

  author: William Joye
  copyright: GPLv2
  year: 2010
  url: https://phillips.shef.ac.uk/pub/cpt-city/ds9
*/
linear-gradient(
  0deg,
  rgb(  0,   0,   0)   0.000%,
  rgb( 76,  76, 255)  33.300%,
  rgb(  0,  76,   0)  33.300%,
  rgb( 76, 255,  76)  66.600%,
  rgb( 76,   0,   0)  66.600%,
  rgb(255,  76,  76) 100.000%
);