This example shows a color wheel visualization built from CSS named colors, with each slice of the pie representing one color from the dataset. The code loads the data using D3’s `csv` utility and manages the asynchronous state with React’s `useState` and `useEffect` hooks. The pie layout is generated with `d3.pie`, and each slice is rendered as an SVG path using `d3.arc`. The fill color of each path is taken directly from the `RGB hex value` column in the loaded CSV data, creating an immediate visual mapping between the data and its representation.