Highlighting Text Inline in Rmarkdown Or Bookdown PDF


I am trying to change the colour of a font in RMarkdown. I would like to be able to highlight in the document when i use a package. For example this seems to work for simple colours $\color{blue}{\text{readxl}}$ but I would like to set it up in such a way that the colour can use an RGB code for maybe something like steel blue (#003766). Using my previous method causes my document to crash with an unrecognizable colour error

! Illegal parameter number in definition of .

l.140 ...reation of this section (\color{#003766}
{\text{knitr}}), (\color...

My second question if someone has the time is to be able to format the colour behind the text, highlighting it like an inline code chunk for example library(rstudio).In essence i want to be able to highlight any packages I use in my analysis

Thank you for your time


Could you give some more defined example, preferably the file with code so we can better understand the issue?



A working example can be found here
Unfortunately it doesn't seem to work for something like book-down

An example of the shading of a word I was thinking of can be found here but its only for HTML



I found a way to do it for PDF, using LaTeX commands:

title: "RCommunityForum"
author: "PJ"
date: "13/07/2019"
  word_document: default
    extra_dependencies: xcolor
    df_print: paged

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)

## R Markdown


This is an R Markdown document. \colorbox{hightlightColor}{Markdown} is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see <http://rmarkdown.rstudio.com>.

When you click the **Knit** button \textcolor{fancyTextColor}{a document will be generated} that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

```{r cars}

* Careful if you copy paste this in markdown since I had to use \ to format the code as it uses ``` as well

Here are some websites for extra info


Thank you very much for the reply PJ.
It works but when i try and integrate it into bookdown it seems to come unstuck

I am using the thesisdown package and i put the extra dependency in the YAML header as

  thesisdown::thesis_pdf: default
  extra_dependencies: xcolor

I get the error

! LaTeX Error: Undefined color model `HTML'.

Error: Failed to compile test_document.tex. See The R package tinytex - Helper Functions to Manage TinyTeX, and Compile LaTeX Documents - Yihui Xie | 谢益辉 for debugging tips. See test_document.log for more info.
Execution halted


Try using other color models and see if it produces the same error. It's possible that the HEX color values is not implemented by that package

\definecolor{fancyTextColor}{RGB}{66, 132, 245}
\definecolor{fancyTextColor}{rgb}{0.258, 0.517, 0.960}

If this doesn't help it's probably related to the package and not to LaTeX


1 Like

That's the one :slight_smile:

Thank you very much....I was banging my head against the wall for this

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