A simple plugin that exposes all tailwind colors as css variables on :root

tailwind-color-vars.js

 function ({ addBase, theme }) {
      function extractColorVars(colorObj, colorGroup = '') {
        return Object.keys(colorObj).reduce((vars, colorKey) => {
          const value = colorObj[colorKey];

          const newVars =
            typeof value === 'string'
              ? { [`--color${colorGroup}-${colorKey}`]: value }
              : extractColorVars(value, `-${colorKey}`);

          return { ...vars, ...newVars };
        }, {});
      }

      addBase({
        ':root': extractColorVars(theme('colors')),
      });
    },