The goal of uiothemes is to provide branded templates for the University of Oslo for commonly used R markdown packages. Currently the package contains:
You can install uiothemes from github
# install.packages("remotes")
remotes::install_github("Athanasiamo/uiothemes")
xaringan presentation, learnr tutorial and distill article templates
with UiO branding can be access easily using the RStudio IDE, by
selecting File -> R markdown ... -> From Template.

Distill website template can be access most easily through the RStudio
IDE to create a new project. File -> New project... -> New Directory -> UiO Distill Website

Previews

Distill article

Xaringan presentation

Learnr tutorial

Distill website
The ggplot branding is applied through themes and scales.
library(uiothemes)
library(ggplot2)
ggplot(mtcars, aes(mpg, disp, colour = cyl)) +
geom_point(size = 5) +
scale_colour_uio(discrete = FALSE) +
theme_uio() +
labs(title = "The fonts and colours are UiO specific",
subtitle = "and can provide coherent plot branding")

ggplot(mtcars, aes(mpg, disp, colour = cyl)) +
geom_point(size = 5) +
scale_colour_uio(palette = "redwhite", discrete = FALSE) +
theme_uio_dark() +
labs(title = "The fonts and colours are UiO specific",
subtitle = "and can provide coherent plot branding")