[By Mike Bostock, for later reuse.]
A quick visual reference to every ColorBrewer scale; colors by Cynthia Brewer. Available in CSS and JS format. Click on a palette to log the constituent colors in hexadecimal RGB to the console.
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ColorBrewer2.org - color advices for cartography
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| background: #ccc; | |
| width: 960px; | |
| height: 500px; | |
| } | |
| .palette { | |
| cursor: pointer; | |
| display: inline-block; | |
| vertical-align: bottom; | |
| margin: 4px 0 4px 6px; | |
| padding: 4px; | |
| background: #fff; | |
| border: solid 1px #aaa; | |
| } | |
| .swatch { | |
| display: block; | |
| vertical-align: middle; | |
| width: 37px; | |
| height: 22px; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/colorbrewer.v1.min.js"></script> | |
| <script> | |
| d3.select("body") | |
| .selectAll(".palette") | |
| .data(d3.entries(colorbrewer)) | |
| .enter().append("span") | |
| .attr("class", "palette") | |
| .attr("title", function(d) { return d.key; }) | |
| .on("click", function(d) { console.log(d3.values(d.value).map(JSON.stringify).join("\n")); }) | |
| .selectAll(".swatch") | |
| .data(function(d) { return d.value[d3.keys(d.value).map(Number).sort(d3.descending)[0]]; }) | |
| .enter().append("span") | |
| .attr("class", "swatch") | |
| .style("background-color", function(d) { return d; }); | |
| </script> |
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