Pen Settings

↑ Insert the most common viewport meta tag

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource
via CSS Lint

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource
via JS Hint

Code Indentation


Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Want a Run Button?

If active, the preview will update automatically when you change code.


              <div class='colorWheel'></div>


              body { background: gainsboro; } 
.colorWheel {
  position: relative;
  margin: 1em auto;
  border: solid 2em white;
  width: 16em; height: 16em;
  border-radius: 50%;
    linear-gradient(36deg, #272b66 42.34%, transparent 42.34%) 0 0,
    linear-gradient(72deg, #2d559f 75.48%, transparent 75.48%) 0 0,
    linear-gradient(-36deg, #9ac147 42.34%, transparent 42.34%) 100% 0,
    linear-gradient(-72deg, #639b47 75.48%, transparent 75.48%) 100% 0, 
    linear-gradient(36deg, transparent 57.66%, #e1e23b 57.66%) 100% 100%,
    linear-gradient(72deg, transparent 24.52%, #f7941e 24.52%) 100% 100%,
    linear-gradient(-36deg, transparent 57.66%, #662a6c 57.66%) 0 100%,
    linear-gradient(-72deg, transparent 24.52%, #9a1d34 24.52%) 0 100%, 
    #43a1cd linear-gradient(#ba3e2e, #ba3e2e) 50% 100%;
  background-repeat: no-repeat;
  background-size: 50% 50%;
  transition: 1s;
.colorWheel:after {
  position: absolute;
  top: 50%; left: 50%;
  margin: -2.8em;
  width: 5.6em; height: 5.6em;
  border-radius: 50%;
  /* add slash at end of line to see central part *
  opacity: .15;
  background: white;
  content: '';
.colorWheel:hover {
  transform: rotate(360deg);


anyone interested in me writing a detailed explanation about the maths of how to compute angles and percentages for the gradients?

Explained here
Loading ..................