This bar chart displays the horsepower ratings of various Chrysler car models, with each bar’s blue color intensity mapped to its power output and a separate HTML legend showing the color scale. Data is loaded from a CSV file using `d3.csv`, and the chart is rendered as SVG with `d3.scaleBand` for the x-axis, `d3.scaleLinear` for the y-axis, and `d3.scaleSequential` with `d3.interpolateBlues` for color encoding. The `d3-legend` plugin generates the color legend, while axis labels and data labels are added manually.