# xcolor-material issue with cmyk document

I am working in a cmyk document with package xcolor-material, the issue is a color definitions produce bad color results. For example: the desire color is the left and the exit is the right.

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[cmyk]{xcolor}
\usepackage{xcolor-material}
\usepackage{sectsty}

\sectionfont{\LARGE\normalfont\sffamily\color{MaterialGreen500}}

\begin{document}

\colorsample[HTML]{MaterialGreen500}
\colorsample[cmyk]{MaterialGreen500}

\colorsample[HTML]{MaterialRed500}
\colorsample[cmyk]{MaterialRed500}

\section{Example}
\end{document}

• Can you show us a MWE? – user36296 May 27 '17 at 15:17
• where did you get the numbers from? the cmyk values are not as I'd expect eg for the second one this convertor gives different 0,.73,.78,.04 colorhexa.com/f44336 – David Carlisle May 27 '17 at 15:27
• @DavidCarlisle My guess would be the conversion if from xcolour: \documentclass{article} \usepackage{xcolor} \begin{document} \convertcolorspec{HTML}{4CAF50}{cmyk}\tmp \definecolor{MaterialGreen}{cmyk}{\tmp} \tmp \end{document} – user36296 May 27 '17 at 16:07

With the colour conversion algorithm of gimp (using the profile "Generic CMYK") instead of the one from xcolor.

Not exactly the same colour, but closer:

\documentclass{article}

\usepackage[cmyk]{xcolor}
\usepackage{xcolor-material}

\definecolor{mygreen}{cmyk}{0.69,0.01,0.82,0.01}
\definecolor{myred}{cmyk}{0.,0.81,0.75,0.}

\begin{document}
\colorsample[cmyk]{mygreen}
\colorsample[HTML]{MaterialGreen500}
\colorsample[cmyk]{MaterialGreen500}

\colorsample[cmyk]{myred}
\colorsample[HTML]{MaterialRed500}
\colorsample[cmyk]{MaterialRed500}

\end{document}


• Thank, I assuming what is prefer redefine my proper style – Xetam May 28 '17 at 20:24