title: How can I make the color of an element more dark on :hover?
body: <p>I have multiple elements in my webpage. For example multiple buttons <em>(which have red background color)</em>, links <em>(which have blue background color)</em> and etc ... .</p>
  
  <p>I need to change the color of them on <code>:hover</code>. Currently I do that like this:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>button{
    background-color: red;
  }
  
  button:hover {
     background-color: #c80020;
  }
  
  a {
    color: blue;
  }
  
  a:hover {
    color: #082767;
    cursor: pointer;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;button&gt;button&lt;/button&gt;
  &lt;a&gt;link&lt;/a&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>As you see, I use a more dark color than element's color on <code>:hover</code>.</p>
  
  <p>All I want to know, Isn't there any color <em>(or approach)</em> to just makes an element more dark than what it is? I don't have any specific color. actually I don't care about any exact color, I just want to make an element more dark on <code>:hover</code>, just that. Any suggestion? </p>