I want to change the background color of my poster but whatever command I try, nothing changes.

I am using this poster: http://www.latextemplates.com/template/baposter-landscape-poster.

This was included in the poster template:

\newcommand{\baposter@backgroundCmd}{\error{No background command defined. Use \background{...} to define background}}

So I thought \background might work, it did not.

These are the relevant packages:

\documentclass[landscape,a0paper,fontscale=0.285]{baposter} % Adjust the font scale/size here

\usepackage{graphicx} % Required for including images
\graphicspath{{figures/}} % Directory in which figures are stored


If anyone has any ideas that would be beyond ideal.

  • 2
    Welcome to TeX.SX! Please post a full MWE.
    – TeXnician
    Commented Feb 9, 2017 at 12:58

1 Answer 1


If you are happy with one-colour background it is quite simple:

\definecolor{BGcolour}{RGB}{40,40,40} % Define the colour named BGcolour
% other options
bgColorOne=BGcolour, % declare background colour
background=plain,    % set background to be plain colour
% other options}

% Poster code


Personal sidenotes:
Be carefull about transparency in your figures!
Be carefull about text and graphics colour match to the background!
I think that in most cases plain white (background=none) background and matte paper is the best option.

  • 1
    Maybe an addition to the careful-list: printing a poster with coloured background will consume a lot more ink. Commented Feb 9, 2017 at 13:56
  • @samcarter True, but printing costs are, in my opinion, negligible to readability and aesthetical result. White background is both clean and cheap :)
    – Crowley
    Commented Feb 9, 2017 at 14:39
  • when I put this into my code I get an error like this: Runaway argument? { Paragraph ended before \XKV@ifcmd was complete. I do not know why it keeps coming up especially when I do not know what this XKV file is..
    – cameron
    Commented Feb 9, 2017 at 17:01
  • @cameron What have you changed to get rid off the error. And note that code emphasis works here too. And add your code before asking.
    – Crowley
    Commented Feb 9, 2017 at 17:23

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