RBG Color Changer

App.css

.outsideContainer {
  height: 90vh;
  padding: 5vh;
  margin: auto;
}
.container {
  background: rgb(248, 248, 248);
  width: 50%;
  margin: auto;
  text-align: center;
  box-shadow: 2px 2px 5px black;
  border-radius: 10px;
  font-family: Cambria, Cochin, Georgia, Times, "Times New Roman", serif;
  padding: 20px;
}

.colorOutput {
  padding: 50px;
  box-shadow: 2px 2px 5px black;
  border-radius: 10px;
  width: 2.5em;
  height: 2.5em;
  margin: auto;
}

input[type="text"] {
  background: none;
  height: 1.5em;
  font-family: Cambria, Cochin, Georgia, Times, "Times New Roman", serif;
}
.icon {
  font-size: 1.5em;
  margin: 5px;
}

.slidecontainer {
  width: 75%;
  margin: 10px auto;
}

.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 25px;
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  -webkit-transition: 0.2s;
  transition: opacity 0.2s;
  border-radius: 10px;
}

.slider:hover {
  opacity: 1;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  background: black;
  cursor: pointer;
  border-radius: 10px;
}

.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  background: black;
  cursor: pointer;
  border-radius: 10px;
}
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {
  .container {
    width: 80%;
    height: 80%;
  }
}
@media only screen and (max-width: 500px) {
  .container {
    width: 80%;
    height: 80%;
  }
}

app.js

import React, { useState } from "react";
import "./App.css";

function App() {
  const [copied, setCopied] = useState(false);
  const [colors, setColors] = useState({
    color1: 0,
    color2: 0,
    color3: 255
  });

  const currentColor = {
    background:
      "rgb(" +
      colors.color1 +
      ", " +
      colors.color2 +
      ", " +
      colors.color3 +
      " )"
  };

  const fontColor = {
    color:
      "rgb(" +
      colors.color1 +
      ", " +
      colors.color2 +
      ", " +
      colors.color3 +
      " )"
  };

  const handleSlider = e => {
    setCopied(false);
    const { value, id } = e.target;
    setColors({ ...colors, [id]: value });
  };

  const copyColor = () => {
    var copyText = document.getElementById("colorCopy");
    copyText.select();
    copyText.setSelectionRange(0, 99999);
    document.execCommand("copy");
    setCopied(true);
  };

  const rgbToHex = rgb => {
    let hex = Number(rgb).toString(16);
    if (hex.length < 2) {
      hex = "0" + hex;
    }
    return hex;
  };

  const fullColorHex = (r, g, b) => {
    let red = rgbToHex(r);
    let green = rgbToHex(g);
    let blue = rgbToHex(b);
    return red + green + blue;
  };

  return (
    <div className="outsideContainer" style={currentColor}>
      <div className="container">
        <h2 style={fontColor}>RGB Color Chooser</h2>
        <div className="colorOutput" style={currentColor} />
        {copied ? (
          <h6 id="copied">Color Copied to Clipboard</h6>
        ) : (
          <h6 id="copied">Select Color</h6>
        )}

        <input
          id="colorCopy"
          type="text"
          value={"#"+ fullColorHex(colors.color1, colors.color2, colors.color3)}
        />
        <i 
          className="fa fa-copy icon" 
          onClick={copyColor} 
          style={fontColor} 
        />
        <br />
        <input 
          id="colorCopy" 
          type="text" 
          value={currentColor.background} 
        />
        <i 
          className="fa fa-copy icon"
          onClick={copyColor} 
          style={fontColor} 
        />

        <div className="slidecontainer">
          R
          <input
            type="range"
            min="0"
            max="255"
            className="slider"
            id="color1"
            onChange={handleSlider}
            value={colors.color1}
          />
          G
          <input
            type="range"
            min="0"
            max="255"
            className="slider"
            id="color2"
            onChange={handleSlider}
            value={colors.color2}
          />
          B
          <input
            type="range"
            min="0"
            max="255"
            className="slider"
            id="color3"
            onChange={handleSlider}
            value={colors.color3}
          />
        </div>
      </div>
    </div>
  );
}

export default App;

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/all.css" rel="stylesheet" >
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="theme-color" content="#000000" />
    <meta
      name="description"
      content="Web site created using create-react-app"
    />
    <link rel="apple-touch-icon" href="logo192.png" />
    <!--
      manifest.json provides metadata used when your web app is installed on a
      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
    -->
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
    <!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.

      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->
    <title>React App</title>
  </head>
  <body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
  </body>
</html>