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Use of linkcolor option in hyperref

options for appearance of links in hyperrefI cannot get a (properly) underlined hyperlink in blueTexmaker Illegal unit of measureFigure reference numbers off by one with cleverefautoref to dmath (from breqn package) generates wrong link textReferencing formula before defining itHow to refer to pgfplot legend labels with hyperref?Possibility to exclude coloring certain links using hyperrefHow to discolor *ONE* particular link/citation in hyperref?Retain hyperref and url links after including multiple PDF files in a collective PDF fileHow can I deactivate hyperref but keep the bookmarks bar?

2

This question is posted as a requested follow-on from options for appearance of links in hyperref , to clear up some odd behaviour in hyperref.

In the snippet below, the two usepackage commands both work, but linkcolor=. throws an error when combined with colorlinks=true (error text shown at end of post).

documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}

If I use the line

usepackage[colorlinks=true,linkcolor=.]{hyperref}

(note the dot), I get error text:

LaTeX Error: Undefined color

and the error comes immediately after the closing brace of ref{}

The effect I wanted to achieve was to remove boxes around links and leave all links text color except actual URLs, so when I used this command I also had urlcolor=blue in the options, but that was not needed to reproduce the error. But the following line did work, in that all links but URLs were invisible:

usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}

Using MiKTeX-pdfTeX 2.9.6959 (1.40.20) (MiKTeX 2.9.6960) on Windows 10

hyperref

share|improve this question

edited yesterday

AndréC

9,71311547

asked yesterday

Dr DarrenDr Darren

293

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Add usepackage{xcolor}.
  
  – Ulrike Fischer
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?
  
  – Andrew
  yesterday
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.
  
  – Dr Darren
  yesterday
  

  
  
  
  

add a comment | 

2

This question is posted as a requested follow-on from options for appearance of links in hyperref , to clear up some odd behaviour in hyperref.

In the snippet below, the two usepackage commands both work, but linkcolor=. throws an error when combined with colorlinks=true (error text shown at end of post).

documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}

If I use the line

usepackage[colorlinks=true,linkcolor=.]{hyperref}

(note the dot), I get error text:

LaTeX Error: Undefined color

and the error comes immediately after the closing brace of ref{}

The effect I wanted to achieve was to remove boxes around links and leave all links text color except actual URLs, so when I used this command I also had urlcolor=blue in the options, but that was not needed to reproduce the error. But the following line did work, in that all links but URLs were invisible:

usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}

Using MiKTeX-pdfTeX 2.9.6959 (1.40.20) (MiKTeX 2.9.6960) on Windows 10

hyperref

share|improve this question

edited yesterday

AndréC

9,71311547

asked yesterday

Dr DarrenDr Darren

293

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Add usepackage{xcolor}.
  
  – Ulrike Fischer
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Of course you get an error with linkcolor=. as this is setting the colour to ., which is a non-existent colour. SImialrly, with linkcolor= you are remving all colour so the lins are invisible. Doesn't usepackage[colorlinks=true,linkcolor=black]{hyperref} give what you want?
  
  – Andrew
  yesterday
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you for your advice to add xcolor. Perhaps hyperref should be loading it? I did not want to assume text was black. linkcolor=. is supposed to match the current text colour. See the discussion linked in the question for context. linkcolor=. works under some circumstances. The dot on its own is not necessarily an error.
  
  – Dr Darren
  yesterday
  

  
  
  
  

add a comment | 

This question is posted as a requested follow-on from options for appearance of links in hyperref , to clear up some odd behaviour in hyperref.

In the snippet below, the two usepackage commands both work, but linkcolor=. throws an error when combined with colorlinks=true (error text shown at end of post).

documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}

If I use the line

usepackage[colorlinks=true,linkcolor=.]{hyperref}

(note the dot), I get error text:

LaTeX Error: Undefined color

and the error comes immediately after the closing brace of ref{}

The effect I wanted to achieve was to remove boxes around links and leave all links text color except actual URLs, so when I used this command I also had urlcolor=blue in the options, but that was not needed to reproduce the error. But the following line did work, in that all links but URLs were invisible:

usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}

Using MiKTeX-pdfTeX 2.9.6959 (1.40.20) (MiKTeX 2.9.6960) on Windows 10

hyperref

share|improve this question

edited yesterday

AndréC

9,71311547

asked yesterday

Dr DarrenDr Darren

293

documentclass{article}



usepackage[colorlinks=true,linkcolor=]{hyperref}

%usepackage[linkcolor=.]{hyperref}



begin{document}



See Figure~ref{fig}



begin{figure}

        caption{This is an empty figure label{fig}}

end{figure}

end{document}

usepackage[colorlinks=true,linkcolor=.]{hyperref}

usepackage[colorlinks=true,urlcolor=blue,linkcolor=]{hyperref}

share|improve this question

edited yesterday

AndréC

9,71311547

asked yesterday

Dr DarrenDr Darren

293

share|improve this question

edited yesterday

AndréC

9,71311547

asked yesterday

Dr DarrenDr Darren

293

edited yesterday

AndréC

9,71311547

edited yesterday

AndréC

9,71311547

asked yesterday

Dr DarrenDr Darren

293

asked yesterday

Dr DarrenDr Darren

293

2 Answers
2

active

oldest

votes

5

linkcolor=. causes hyperref to issue color{.}

which produces

LaTeX Error: Undefined color `.'

as there is no colour of that name using the standard color package as loaded by hyperref.

You are possibly thinking of the xcolor package syntax wher . means the current color

usepackage{xcolor}

usepackage[colorlinks=true,linkcolor=.]{hyperref}

works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.

share|improve this answer

answered yesterday

David CarlisleDavid Carlisle

493k4111371885

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.
  
  – Dr Darren
  yesterday
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this
  
  – David Carlisle
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you for that advice. All I can say is that I did what I did as a naïve user and to me it seemed logical. It is great to have so much expertise out there, and people willing to give their expertise. I wanted one kind of link to be blue and the rest invisible. Many thanks.
  
  – Dr Darren
  9 hours ago
  

  
  
  
  

add a comment | 

0

To sum up, as noted above, adding

usepackage{xcolor}

fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.

Perhaps hyperref should load xcolor instead of color?

share|improve this answer

answered yesterday

Dr DarrenDr Darren

293

add a comment | 

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5

linkcolor=. causes hyperref to issue color{.}

which produces

LaTeX Error: Undefined color `.'

as there is no colour of that name using the standard color package as loaded by hyperref.

You are possibly thinking of the xcolor package syntax wher . means the current color

usepackage{xcolor}

usepackage[colorlinks=true,linkcolor=.]{hyperref}

works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.

share|improve this answer

answered yesterday

David CarlisleDavid Carlisle

493k4111371885

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.
  
  – Dr Darren
  yesterday
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this
  
  – David Carlisle
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you for that advice. All I can say is that I did what I did as a naïve user and to me it seemed logical. It is great to have so much expertise out there, and people willing to give their expertise. I wanted one kind of link to be blue and the rest invisible. Many thanks.
  
  – Dr Darren
  9 hours ago
  

  
  
  
  

add a comment | 

5

linkcolor=. causes hyperref to issue color{.}

which produces

LaTeX Error: Undefined color `.'

as there is no colour of that name using the standard color package as loaded by hyperref.

You are possibly thinking of the xcolor package syntax wher . means the current color

usepackage{xcolor}

usepackage[colorlinks=true,linkcolor=.]{hyperref}

works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.

share|improve this answer

answered yesterday

David CarlisleDavid Carlisle

493k4111371885

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Strange to you. Seemed reasonable to me, with my lack of experience. I didn't want a border, so saying 'colour it instead' and then making the colour like the text seemed reasonable to me.
  
  – Dr Darren
  yesterday
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @DrDarren there is some cost to adding a colour, the resulting pdf will have code to push a colour on to the stack and restore it, just using the current colour, conversely a pdf link always has a border attribute so setting its width to 0 (pdfborder= 0 0 0) is a far more direct and lightweight way of specifyng this
  
  – David Carlisle
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you for that advice. All I can say is that I did what I did as a naïve user and to me it seemed logical. It is great to have so much expertise out there, and people willing to give their expertise. I wanted one kind of link to be blue and the rest invisible. Many thanks.
  
  – Dr Darren
  9 hours ago
  

  
  
  
  

add a comment | 

linkcolor=. causes hyperref to issue color{.}

which produces

LaTeX Error: Undefined color `.'

as there is no colour of that name using the standard color package as loaded by hyperref.

You are possibly thinking of the xcolor package syntax wher . means the current color

usepackage{xcolor}

usepackage[colorlinks=true,linkcolor=.]{hyperref}

works, although specifying coloured links this way seems slightly strange choice rather than just specifying the link border to have width 0.

share|improve this answer

answered yesterday

David CarlisleDavid Carlisle

493k4111371885

LaTeX Error: Undefined color `.'

usepackage{xcolor}

usepackage[colorlinks=true,linkcolor=.]{hyperref}

share|improve this answer

answered yesterday

David CarlisleDavid Carlisle

493k4111371885

answered yesterday

David CarlisleDavid Carlisle

493k4111371885

answered yesterday

David CarlisleDavid Carlisle

493k4111371885

0

To sum up, as noted above, adding

usepackage{xcolor}

fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.

Perhaps hyperref should load xcolor instead of color?

share|improve this answer

answered yesterday

Dr DarrenDr Darren

293

add a comment | 

0

To sum up, as noted above, adding

usepackage{xcolor}

fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.

Perhaps hyperref should load xcolor instead of color?

share|improve this answer

answered yesterday

Dr DarrenDr Darren

293

add a comment | 

To sum up, as noted above, adding

usepackage{xcolor}

fixes the problem with using the dot in the hyperref options. There are other ways of getting the result I wanted that also do not throw errors; thanks to other posters.

Perhaps hyperref should load xcolor instead of color?

share|improve this answer

answered yesterday

Dr DarrenDr Darren

293

share|improve this answer

answered yesterday

Dr DarrenDr Darren

293

answered yesterday

Dr DarrenDr Darren

293

answered yesterday

Dr DarrenDr Darren

293