tailwind.config.ts

import type { Config } from 'tailwindcss'

const config: Config = {
  content: [
    './pages/**/*.{js,ts,jsx,tsx,mdx}',
    './components/**/*.{js,ts,jsx,tsx,mdx}',
    './app/**/*.{js,ts,jsx,tsx,mdx}',
  ],
  theme: {
    extend: {
      backgroundImage: {
        'gradient-radial': 'radial-gradient(var(--tw-gradient-stops))',
        'gradient-conic': 'conic-gradient(from 180deg at 50% 50%, var(--tw-gradient-stops))',
      },
    },
  },
  plugins: [],
}
export default config

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

/** @type {import('tailwindcss').Config} */
module.exports = {
  content: ['./src/**/*.{ts,tsx}'],
  darkMode: 'class',
  theme: {
    // rest of the code
  },
  plugins: [
    // rest of the code
    addVariablesForColors,
  ],
}

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

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