cooloRsampler

cooloRsampler is an R package for generating color palettes from Coolors. This package streamlines grabbing color palette HEX codes to use for your next data visualization, offering an automated way to quickly try out countless palettes.

Installation

You can install the current verion of cooloRsampler from GitHub with:

# install.packages("devtools")
devtools::install_github("kkakey/cooloRsampler")
library(cooloRsampler)

The current version of cooloRsampler requires Firefox. Please install Firefox from here, if you do not have the application already.

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coolor_sampler()

This function grabs a randomly generated color palette of 2 to 9 colors from https://coolors.co/.

parameter	description
ncolor	Number of desired colors in palette. Default is 5.
type	Type of palette: continuous or discrete. Default is discrete.

# Generates a color palette of 8 from https://coolors.co/
my_colors <- coolor_sampler(ncolor=8)
[1] "Grabbing some colors - this will take just a few seconds!"

my_colors
[1] "#08415C" "#213E58" "#393B53" "#6A3549" "#CC2936" "#EBBAB9"
[7] "#388697" "#B5FFE1"

# Check out the colors
scales::show_col(my_colors, label=F, ncol=1)
# Unsatisfied? Run `coolor_sampler()` again!

Not entirely satisfied with the palette generated? Run coolor_sampler() again!

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Example

library(cooloRsampler)

my_colors <- coolor_sampler(ncolor=5)
[1] "Grabbing some colors - this will take just a few seconds!"

# Easily add the palette to your next ggplot!
background_col <- my_colors[1]
points_col <- my_colors[2:length(my_colors)]

library(ggplot2)
data("mtcars")

ggplot(mtcars, aes(mpg, wt)) +
   geom_point(aes(colour = factor(cyl), size = factor(cyl))) +
   scale_colour_manual(values = rev(points_col)) +
   theme(plot.background = element_rect(background_col),
         panel.background = element_rect(background_col),
         legend.background = element_rect(background_col),
         panel.grid.major = element_line("grey40"),
         panel.grid.minor = element_line("grey40"))

Not satisfied with the palette choosen, run coolor_sampler() again! This funcation is an easy way to directly try out new discrete or continuous color palettes.