When I want to use colours in LaTeX, I normally use this colour chart of predefined colours that LaTeX knows by name:
However, I've recently needed to use pstricks (I think it's called) and to use colours (at least in the template I'm working with) I need to type in RGB values, which is unsatisfactory.
Does anyone know of a nice big list like the one below but for RBG values?
Here is a MWE of a template I'm using:
\documentclass[landscape,a0b,final]{a0poster}
\usepackage{epsfig}
\usepackage{multicol}
\usepackage{pstricks,pst-grad}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Definition of some variables and colors
%\renewcommand{\rho}{\varrho}
%\renewcommand{\phi}{\varphi}
\setlength{\columnsep}{6cm}
\setlength{\columnseprule}{1.5mm}
\setlength{\parindent}{0.0cm}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Background %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\background}[3]{
\newrgbcolor{cgradbegin}{#1}
\newrgbcolor{cgradend}{#2}
\psframe[fillstyle=gradient,gradend=cgradend,
gradbegin=cgradbegin,gradmidpoint=#3](0.,0.)(1.\textwidth,-1.\textheight)
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Poster %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newenvironment{poster}{
\begin{center}
\begin{minipage}[c]{0.95\textwidth}
}{
\end{minipage}
\end{center}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% pcolumn %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newenvironment{pcolumn}[1]{
\begin{minipage}{#1\textwidth}
\begin{center}
}{
\end{center}
\end{minipage}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% pbox %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newrgbcolor{lcolor}{0. 0. 0.80}
\newrgbcolor{gcolor1}{1. 1. 1.}
\newrgbcolor{gcolor2}{.80 .80 1.}
\newcommand{\pbox}[4]{
\psshadowbox[#3]{
\begin{minipage}[t][#2][t]{#1}
#4
\end{minipage}
}}
%=======================================================================
\usepackage{eso-pic}
\newcommand\BackgroundPic{
\put(10,-50){
\parbox[b][\paperheight]{\paperwidth}{%
\vfill
\centering
\includegraphics[width=\paperwidth,height=\paperheight,
keepaspectratio]{TheSun2.eps}\vfill}}}
\begin{document}
\AddToShipoutPicture{\BackgroundPic}
%\background{1. 1. 1.}{1. 1. 1.}{0.5}
\vspace*{2cm}
\newrgbcolor{lightblue}{0. 0. 0.80}
\newrgbcolor{white}{1. 1. 1.}
\newrgbcolor{whiteblue}{.80 .80 1.}
\newrgbcolor{brightblue}{0.310 0.749 1}
\begin{poster}
%=======================================================================
\vspace*{2cm}
%%% Begin of Multicols-Enviroment
\begin{multicols}{3}
%%% SECTION 1
\begin{center}\pbox{0.8\columnwidth}{}{linewidth=2mm,framearc=0.1,linecolor=lightblue,fillstyle=gradient,gradangle=180,gradbegin= white,gradend=whiteblue,gradmidpoint=1.0,framesep=1em}{\begin{center} \textbf{Introduction} \end{center}}\end{center}\vspace{1.25cm}
Bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla.
%=========================================================================
\end{multicols}
\end{poster}
\end{document}
colororxcolorpackage. Can you provide a MWE showing what you are trying to do?svgnam.def,x11nam.defintexmf-dist/tex/latex/xcolor?