# where, how, and when to load xcolor options

Here I load xcolor options (dvipsnames) at the very top, so all the xcolor friends don't have to sweat it, but options are like politics at Thanksgiving: s*** hits the fan no matter what:

\documentclass[10pt,usenames,dvipsnames]{beamer}
\usepackage[dvipsnames]{xcolor}
\usepackage{pgfpages}


Apologies, I tried to select the text in overleaf but when I let go of the mouse the selection disappears (it's that been kind of day):

• beamer load xcolor, so you nod need to load it again and had not to load it with different options as you declare in document class. So, in your case just remove second line (with xcolor) in the code: \documentclass[10pt,usenames,dvipsnames]{beamer} \usepackage{pgfpages} Oct 22, 2020 at 21:39
• If you don't want to specify global options (that's what options to the \documentclass are), you can also use \PassOptionsToPackage{usenames,dvipsnames}{xcolor} before xcolor gets loaded (so before \documentclass in this case). Please note that the usenames option is obsolete according to xcolor's documentation. Oct 22, 2020 at 21:49
• do you need any options? xcolor is already loaded, you can't load it again? Oct 22, 2020 at 23:19
• Thanks all for the extremely helpful replies. In hindsight, it should have been obvious to me from lines 1-2 both having [dvipsnames...] that xcolor was being loaded by beamer. @Zarko if you want to place your comment in an answer I'll accept it.
– mkk
Oct 26, 2020 at 17:19
• It's moments like these that help me [slowly] transition from pasting fragments of code found on the internet to writing latex "with intention", haha
– mkk
Oct 26, 2020 at 17:26

The document class beamer load (among others also) package xcolor, so you not need to load it again. If you do, as you show in your question, you get clash between xcolor options. So, in your case just remove second line (with xcolor) in the code:

\documentclass[10pt,dvipsnames]{beamer}
\usepackage{pgfpages}
\usepackage{tikz}

\begin{document}
\begin{frame}
\begin{tikzpicture}
\node[font=\Huge, text=Cyan] {Hello!};
\end{tikzpicture}
\end{frame}
\end{document}


Please note, that the usenames option is obsolete according to documentation of the xcolor, so I omit this option in above MWE.

As stated in the @Skillmon comment: "If you don't want to specify global options (that's what options to the \verb+\documentclass+ are), you can also use \PassOptionsToPackage{usenames,dvipsnames}{xcolor} before xcolor gets loaded, i.e.:"

\PassOptionsToPackage{dvipsnames}{xcolor}
\documentclass[10pt]{beamer}
\usepackage{xcolor} % now option(s) doesn't clash,
% however you not need to load it again!
\usepackage{tikz}
\usepackage{pgfpages}

\begin{document}
\begin{frame}
\begin{tikzpicture}
\node[font=\Huge, text=Cyan] {Hello!};
\end{tikzpicture}
\end{frame}
\end{document}


In both cases, the result is the same:

• super clear explanation. Fi ally I get I :)
– JeT
Oct 26, 2020 at 21:39

On page 20 of the manual for beamer, you find

\documentclass[
10pt,
xcolor={usenames,dvipsnames},
]{beamer}


I recommend this way of typing long list of options to classes, so one has all of them in view and commenting/uncommenting them is easier.