title: Venn diagram proportional and color shading with semi-transparency
body: <p>I have following type of count data. </p>
  
  <pre><code>A   450
  B   1800
  A and B both    230
  </code></pre>
  
  <p>I want to develop a colorful (possibly semi-transparency at intersections) like the following Venn diagram.</p>
  
  <p><img src="https://i.stack.imgur.com/5eJO0.png" alt="enter image description here"></p>
  
  <p><strong>Note:</strong> This figure is an example hand drawn in PowerPoint, and it is not to scale.</p>