palette

palette(values)

Creates a categorical color scale. Pass it to chart as the color option.

values type	Behavior
str	Named scheme, e.g. "tableau10"
list[str]	Colors cycled by index
dict[str, str]	Explicit field value → color map

from gofish import chart, spread, rect, palette

# Named scheme
chart(data, color=palette("tableau10")).flow(
    spread(by="category", dir="x")
).mark(rect(h="value", fill="category"))

# Explicit list
chart(data, color=palette(["#e15759", "#4e79a7", "#59a14f"]))

# Value → color map
chart(data, color=palette({"low": "#4e79a7", "high": "#e15759"}))

See also gradient for continuous data.