Create a Color-Blind Friendly Palette — get_colorblind

Generates a colorblind-friendly palette for use in plots.

Usage

get_colorblind_palette(n = 8, type = "qualitative")

Arguments

n: The number of colors to generate. Default is 8.
type: The type of palette. Options are "qualitative" (for categorical data), "sequential" (for numeric data), or "diverging" (for data with a meaningful zero). Default is "qualitative".

Value

A character vector of hex color codes.

Details

The function uses the ColorBrewer palettes through the RColorBrewer package. For qualitative data, it uses the "Dark2" palette which is colorblind-friendly. For sequential data, it uses the "Blues" palette. For diverging data, it uses the "RdBu" palette.

Examples

# Get 4 colors for categorical groups
colors <- get_colorblind_palette(4)

# Use in a plot
df <- data.frame(
  x = 1:20,
  y = rnorm(20),
  group = rep(letters[1:4], each = 5)
)
library(ggplot2)
ggplot(df, aes(x, y, color = group)) +
  geom_line() +
  scale_color_manual(values = colors)