This article presents an awesome list of hexadecimal colors chart. You will also learn how to use these colors in R.
When creating a plot, colors can be specified using hexadecimal colors code, such as "#FFC00". The first two digits are the level of red, the next two are the level of green, and the last two specify the level of blue color.
Hexadecimal color code chart
The following chart illustrates example of hexadecimal color codes that you can choose:
(Source: http://www.visibone.com)
Using hexadecimal colors in R
- Usage in ggplots. The following R script changes the fill color (in box plots) and points color (in scatter plots).
library(ggplot2)
# Box plot
ggplot(iris, aes(Species, Sepal.Length)) +
geom_boxplot(fill = "#FFDB6D", color = "#C4961A") +
theme_minimal()
# Scatter plot
ggplot(iris, aes(Sepal.Length, Sepal.Width)) +
geom_point(color = "#00AFBB") +
theme_minimal()
- Usage in R base plots:
barplot(c(2,5), col = c("#009999", "#0000FF"))
Conclusion
This article provides a list of hexadecimal colors and shows how to use them in R.
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