/*
  cpt-city: ds9/he (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(128,   0,  32)   1.500%,
  rgb(128,   0,  96)   3.000%,
  rgb(128,   0, 160)   6.500%,
  rgb(128, 128,  95)  12.500%,
  rgb(128, 191,  64)  25.000%,
  rgb(191, 207, 128)  50.000%,
  rgb(255, 255, 255) 100.000%
);