palette

palette(values);

Creates a categorical color scale. Pass it to chart(data, { color }) or .render(el, { color }).

values type	Behavior
string	Named scheme: "tableau10"
string[]	Colors cycled by index
Record<string, string>	Explicit field value → color map

// Named scheme
chart(data, { color: palette("tableau10") })
  .flow(spread({ by: "category", dir: "x" }))
  .mark(rect({ h: "value", fill: "category" }))
  .render(container, { w: 500, h: 300 });

// Explicit array
chart(data, { color: palette(["#e15759", "#4e79a7", "#59a14f"]) });

// Key → color map
chart(data, { color: palette({ low: "#4e79a7", high: "#e15759" }) });

See also gradient for continuous data.