Note this is now outdated and is not inline with latest tailwind default colours

tailwind-default-colors.css

:root {
  --black: #22292f;
  --grey-darkest: #3d4852;
  --grey-darker: #606f7b;
  --grey-dark: #8795a1;
  --grey: #b8c2cc;
  --grey-light: #dae1e7;
  --grey-lighter: #f1f5f8;
  --grey-lightest: #f8fafc;
  --white: #ffffff;

  --red-darkest: #3b0d0c;
  --red-darker: #621b18;
  --red-dark: #cc1f1a;
  --red: #e3342f;
  --red-light: #ef5753;
  --red-lighter: #f9acaa;
  --red-lightest: #fcebea;

  --orange-darkest: #462a16;
  --orange-darker: #613b1f;
  --orange-dark: #de751f;
  --orange: #f6993f;
  --orange-light: #faad63;
  --orange-lighter: #fcd9b6;
  --orange-lightest: #fff5eb;

  --yellow-darkest: #453411;
  --yellow-darker: #684f1d;
  --yellow-dark: #f2d024;
  --yellow: #ffed4a;
  --yellow-light: #fff382;
  --yellow-lighter: #fff9c2;
  --yellow-lightest: #fcfbeb;

  --green-darkest: #0f2f21;
  --green-darker: #1a4731;
  --green-dark: #1f9d55;
  --green: #38c172;
  --green-light: #51d88a;
  --green-lighter: #a2f5bf;
  --green-lightest: #e3fcec;

  --teal-darkest: #0d3331;
  --teal-darker: #20504f;
  --teal-dark: #38a89d;
  --teal: #4dc0b5;
  --teal-light: #64d5ca;
  --teal-lighter: #a0f0ed;
  --teal-lightest: #e8fffe;

  --blue-darkest: #12283a;
  --blue-darker: #1c3d5a;
  --blue-dark: #2779bd;
  --blue: #3490dc;
  --blue-light: #6cb2eb;
  --blue-lighter: #bcdefa;
  --blue-lightest: #eff8ff;

  --indigo-darkest: #191e38;
  --indigo-darker: #2f365f;
  --indigo-dark: #5661b3;
  --indigo: #6574cd;
  --indigo-light: #7886d7;
  --indigo-lighter: #b2b7ff;
  --indigo-lightest: #e6e8ff;

  --purple-darkest: #21183c;
  --purple-darker: #382b5f;
  --purple-dark: #794acf;
  --purple: #9561e2;
  --purple-light: #a779e9;
  --purple-lighter: #d6bbfc;
  --purple-lightest: #f3ebff;

  --pink-darkest: #451225;
  --pink-darker: #6f213f;
  --pink-dark: #eb5286;
  --pink: #f66d9b;
  --pink-light: #fa7ea8;
  --pink-lighter: #ffbbca;
  --pink-lightest: #ffebef;
}