% Thanks to Jubobs, the author of this document on http://tex.stackexchange.com/a/176372/108649.
%
% Following the advice of <NAME>, author of The Non-Designer's Design Book:
% 		A set of three colors equidistant from each other always creates a triad of pleasing colors.
%
% Those colors have been defined below in LaTeX.
\documentclass{article}

\usepackage{lipsum}
\usepackage{filecontents}
\usepackage[dvipsnames]{xcolor}
\usepackage{hyperref}
\usepackage{cleveref}

\newcommand\myshade{85}
\colorlet{mylinkcolor}{violet}
\colorlet{mycitecolor}{YellowOrange}
\colorlet{myurlcolor}{Aquamarine}

\hypersetup{
  linkcolor  = mylinkcolor!\myshade!black,
  citecolor  = mycitecolor!\myshade!black,
  urlcolor   = myurlcolor!\myshade!black,
  colorlinks = true,
}

\bibliographystyle{alpha}

\begin{filecontents*}{mybib.bib}
@ARTICLE{bibexample,
   author = {<NAME>},
   title = {The Gnats and Gnus Document Preparation System},
   journal = {\mbox{G-Animal's} Journal},
   year = 1986,
}
\end{filecontents*}

\begin{document}
\tableofcontents
\section{foo}\label{foosec}
\subsection{bar}\label{barsubsec}
All \TeX{} users, rally around \url{http://tex.stackexchange.com}!
As shown in~\cite{bibexample}, blah blah blah in \cref{barsubsec}.
\bibliography{mybib}
\end{document}