This example shows a React app that loads CSS named color data from a remote CSV file using D3’s `csv` method, then renders each color as a radial slice of an SVG pie chart. React state stores the fetched data, while D3’s `arc` generator calculates the path geometry for each slice, with the fill set to the color’s RGB hex value. The visualization uses a fixed outer radius and varying start angles, producing a fan-like layout centered in the SVG.