Harry Potter colors by sxywu

index.html

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.15.0/lodash.min.js"></script>
  <script type="text/javascript" src="//gka.github.io/chroma.js/vendor/chroma-js/chroma.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
    var colors = chroma.scale(['#fff1ec', '#ed3282']);
    var colors2 = chroma.scale(['#fff1ec', '#ad32ed'])
    colors = [colors(0), colors(0.25), colors(0.5), colors(0.75), colors(1),
             colors2(0), colors2(0.25), colors2(0.5), colors2(0.75), colors2(1)];
    
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
    
    var perRow = 5;
    var size = 100;
    var g = svg.selectAll('g')
    	.data(colors).enter().append('g')
    	.attr('transform', (d, i) => {
      	var x = (i % perRow + 1) * size;
      	var y = (Math.floor(i / perRow) + 1) * size;
      	return 'translate(' + [x, y] + ')';
      }).attr('fill', d => d);
    
    g.append('circle')
    	.attr('r', size / 4);
    
    g.append('text')
    	.attr('y', size / 4 + 36)
    	.attr('text-anchor', 'middle')
    	.attr('dy', '.35em')
    	.text((d, i) => d);
  </script>
</body>