The brewer scales provide sequential, diverging and qualitative colour schemes from ColorBrewer. These are particularly well suited to display discrete values on a map. See https://colorbrewer2.org for more information. scale_colour_brewer( name = waiver(), ..., type = "seq", palette = 1, direction = 1, aesthetics = "colour" ) scale_fill_brewer( name = waiver(), ..., type = "seq", palette = 1, dir