Hex Color/Shades Generator of Given Color Using JavaScript values.js React

import React, { useState } from 'react'
import SingleColor from './SingleColor'

import Values from 'values.js'

function App() {
  const [color, setColor] = useState('')
  const [error, setError] = useState(false)
  const [list, setList] = useState(new Values('#f15025').all(10))

  const handleSubmit = (e) => {
    e.preventDefault()
    try {
      let colors = new Values(color).all(10)
      setList(colors)
    } catch (error) {
      setError(true)
      console.log(error)
    }
  }

  return (
    <>
      <section className='container'>
        <h3>color generator</h3>
        <form onSubmit={handleSubmit}>
          <input
            type='text'
            value={color}
            onChange={(e) => setColor(e.target.value)}
            placeholder='#f15025'
            className={`${error ? 'error' : null}`}
          />
          <button className='btn' type='submit'>
            submit
          </button>
        </form>
      </section>
      <section className='colors'>
        {list.map((color, index) => {
          return (
            <SingleColor
              key={index}
              {...color}
              index={index}
              hexColor={color.hex}
            />
          )
        })}
      </section>
    </>
  )
}

export default App

/*
=============== 
Variables
===============
*/

:root {
  /* dark shades of primary color*/
  --clr-primary-1: hsl(205, 86%, 17%);
  --clr-primary-2: hsl(205, 77%, 27%);
  --clr-primary-3: hsl(205, 72%, 37%);
  --clr-primary-4: hsl(205, 63%, 48%);
  /* primary/main color */
  --clr-primary-5: hsl(205, 78%, 60%);
  /* lighter shades of primary color */
  --clr-primary-6: hsl(205, 89%, 70%);
  --clr-primary-7: hsl(205, 90%, 76%);
  --clr-primary-8: hsl(205, 86%, 81%);
  --clr-primary-9: hsl(205, 90%, 88%);
  --clr-primary-10: hsl(205, 100%, 96%);
  /* darkest grey - used for headings */
  --clr-grey-1: hsl(209, 61%, 16%);
  --clr-grey-2: hsl(211, 39%, 23%);
  --clr-grey-3: hsl(209, 34%, 30%);
  --clr-grey-4: hsl(209, 28%, 39%);
  /* grey used for paragraphs */
  --clr-grey-5: hsl(210, 22%, 49%);
  --clr-grey-6: hsl(209, 23%, 60%);
  --clr-grey-7: hsl(211, 27%, 70%);
  --clr-grey-8: hsl(210, 31%, 80%);
  --clr-grey-9: hsl(212, 33%, 89%);
  --clr-grey-10: hsl(210, 36%, 96%);
  --clr-white: #fff;
  --clr-red-dark: hsl(360, 67%, 44%);
  --clr-red-light: hsl(360, 71%, 66%);
  --clr-green-dark: hsl(125, 67%, 44%);
  --clr-green-light: hsl(125, 71%, 66%);
  --clr-black: #222;
  --transition: all 0.3s linear;
  --spacing: 0.1rem;
  --radius: 0.25rem;
  --light-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --dark-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  --max-width: 1170px;
  --fixed-width: 620px;
}
/*
=============== 
Global Styles
===============
*/

*,
::after,
::before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background: var(--clr-grey-10);
  color: var(--clr-grey-1);
  line-height: 1.5;
  font-size: 0.875rem;
}
ul {
  list-style-type: none;
}
a {
  text-decoration: none;
}
h1,
h2,
h3,
h4 {
  letter-spacing: var(--spacing);
  text-transform: capitalize;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}
h1 {
  font-size: 3rem;
}
h2 {
  font-size: 2rem;
}
h3 {
  font-size: 1.25rem;
}
h4 {
  font-size: 0.875rem;
}
p {
  margin-bottom: 1.25rem;
  color: var(--clr-grey-5);
}
@media screen and (min-width: 800px) {
  h1 {
    font-size: 4rem;
  }
  h2 {
    font-size: 2.5rem;
  }
  h3 {
    font-size: 1.75rem;
  }
  h4 {
    font-size: 1rem;
  }
  body {
    font-size: 1rem;
  }
  h1,
  h2,
  h3,
  h4 {
    line-height: 1;
  }
}
/*  global classes */

/* section */
.section {
  width: 90vw;
  margin: 0 auto;
  max-width: var(--max-width);
}

@media screen and (min-width: 992px) {
  .section {
    width: 95vw;
  }
}

/*
=============== 
Color Generator
===============
*/

.container {
  text-align: center;
  display: flex;
  align-items: center;
  height: 100px;
  padding-left: 2rem;
}
.container h3 {
  margin-bottom: 0;
  margin-right: 2rem;
}

input {
  border-color: transparent;
  padding: 0.5rem 1rem;
  font-size: 1.2rem;
  border-top-left-radius: var(--radius);
  border-bottom-left-radius: var(--radius);
}
.btn {
  background: var(--clr-primary-5);
  padding: 0.5rem 1rem;
  font-size: 1.2rem;
  border-color: transparent;
  border-top-right-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
  text-transform: capitalize;
  color: var(--clr-white);
  cursor: pointer;
}
@media screen and (max-width: 576px) {
  .container h3 {
    font-size: 1rem;
  }
  input,
  .btn {
    font-size: 0.85rem;
  }
}
input.error {
  border: 2px solid var(--clr-red-dark);
}
.colors {
  min-height: calc(100vh - 100px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(223.33px, 1fr));
  grid-template-rows: repeat(auto-fit, minmax(96px, 1fr));
}
.color {
  padding: 1rem 2rem;
  cursor: pointer;
  font-size: 1rem;
  text-transform: none;
}
.percent-value {
  margin-bottom: 0;
  color: var(--clr-grey-1);
}
.color-value {
  color: var(--clr-grey-1);
  margin-bottom: 0;
}
.color-light .color-value {
  color: var(--clr-white);
}
.color-light .percent-value {
  color: var(--clr-white);
}

.alert {
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

import React, { useState, useEffect } from 'react'
import rgbToHex from './utils'

const SingleColor = ({ rgb, weight, index, hexColor }) => {
  const [alert, setAlert] = useState(false)
  const bcg = rgb.join(',')
  const hex = rgbToHex(...rgb)
  const hexValue = `#${hexColor}`
  useEffect(() => {
    const timeout = setTimeout(() => {
      setAlert(false)
    }, 3000)
    return () => clearTimeout(timeout)
  }, [alert])
  return (
    <article
      className={`color ${index > 10 && 'color-light'}`}
      style={{ backgroundColor: `rgb(${bcg})` }}
      onClick={() => {
        setAlert(true)
        navigator.clipboard.writeText(hexValue)
      }}
    >
      <p className='percent-value'>{weight}%</p>
      <p className='color-value'>{hexValue}</p>
      {alert && <p className='alert'>copied to clipboard</p>}
    </article>
  )
}

export default SingleColor

function componentToHex(c) {
    var hex = c.toString(16);
    return hex.length == 1 ? '0' + hex : hex;
  }
  
  function rgbToHex(r, g, b) {
    return '#' + componentToHex(r) + componentToHex(g) + componentToHex(b);
  }
  
  export default rgbToHex;