Data Visualization with D3: Change the Color of an SVG Element

In SVG, a rect shape is colored with the fill attribute. It supports hex codes, color names, and rgb values, as well as more complex options like gradients and transparency.

<body>

  <script>

    const dataset = [12, 31, 22, 17, 25, 18, 29, 14, 9];

    const w = 500;

    const h = 100;

    const svg = d3.select("body")

                  .append("svg")

                  .attr("width", w)

                  .attr("height", h);

    svg.selectAll("rect")

       .data(dataset)

       .enter()

       .append("rect")

       .attr("x", (d, i) => i * 30)

       .attr("y", (d, i) => h - 3 * d)

       .attr("width", 25)

       .attr("height", (d, i) => 3 * d)

       .attr('fill','navy')

  </script>

</body>

Output: