tailwind.config.js

const {
  default: flattenColorPalette,
} = require('tailwindcss/lib/util/flattenColorPalette')

const svgToDataUri = require('mini-svg-data-uri')

/** @type {import('tailwindcss').Config} */
module.exports = {
  content: [
    './app/**/*.{js,ts,jsx,tsx,mdx}',
    './pages/**/*.{js,ts,jsx,tsx,mdx}',
    './components/**/*.{js,ts,jsx,tsx,mdx}',
  ],
  theme: {
    extend: {
      fontFamily: {
        sans: ['Montserrat)', 'sans-serif'],
        mono: ['Roboto-Mono)', 'monospace'],
      },
    },
  },
  plugins: [
    addVariablesForColors,
    function ({ matchUtilities, theme }) {
      matchUtilities(
        {
          'bg-grid': (value) => ({
            backgroundImage: `url("${svgToDataUri(
              `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32" fill="none" stroke="${value}"><path d="M0 .5H31.5V32"/></svg>`
            )}")`,
          }),
          'bg-grid-small': (value) => ({
            backgroundImage: `url("${svgToDataUri(
              `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="8" height="8" fill="none" stroke="${value}"><path d="M0 .5H31.5V32"/></svg>`
            )}")`,
          }),
          'bg-dot': (value) => ({
            backgroundImage: `url("${svgToDataUri(
              `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="16" height="16" fill="none"><circle fill="${value}" id="pattern-circle" cx="10" cy="10" r="1.6257413380501518"></circle></svg>`
            )}")`,
          }),
        },
        {
          values: flattenColorPalette(theme('backgroundColor')),
          type: 'color',
        }
      )
    },
  ],
}

// This plugin adds each Tailwind color as a global CSS variable, e.g. var(--gray-200)
function addVariablesForColors({ addBase, theme }) {
  let allColors = flattenColorPalette(theme('colors'))
  let newVars = Object.fromEntries(
    Object.entries(allColors).map(([key, val]) => [`--${key}`, val])
  )

  addBase({
    ':root': newVars,
  })
}