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Discrete color palette (categorical)

Source: R/a11y_palette.R
a11y_palette.Rd

Returns hex codes for a color-vision-aware categorical palette. Most palettes are runtime wrappers around RColorBrewer::brewer.pal() so the authoritative colors stay in their source package.

Usage

a11y_palette(name = "dark2_8", n = NULL, bg = NULL)

Arguments

name

Discrete palette name. Built-in: "dark2_8" (default, RColorBrewer Dark2), "set2_8" (RColorBrewer Set2), "paired_12" (RColorBrewer Paired), "aaa_5" (custom AAA-on-white set).

n

Optional number of colors. Defaults to the palette's full size (truncates from the start when smaller).

bg

Plot background context. One of NULL (default – no check), "white", or "dark". When set, the function warns if the palette's safe_on tag does not match.

Value

Character vector of hex codes (e.g., "#1B9E77"). For sequential gradients, see a11y_palette_seq().

Examples

a11y_palette("dark2_8")
#> [1] "#1B9E77" "#D95F02" "#7570B3" "#E7298A" "#66A61E" "#E6AB02" "#A6761D"
#> [8] "#666666"
a11y_palette("aaa_5")
#> [1] "#154E8A" "#7C2C5E" "#5C5108" "#8A3A1F" "#2D5C53"
a11y_palette("dark2_8", n = 4)
#> [1] "#1B9E77" "#D95F02" "#7570B3" "#E7298A"