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by ymwork
Fri Jul 29, 2016 11:31 am
Forum: Text Formatting
Topic: Why definecolor failed?
Replies: 1
Views: 4010

Why definecolor failed?

I write below

Code: Select all

\definecolor {darkblue}{rgb}{0.3,0.5,0.8}
But get compilation information

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! Undefined control sequence.
l.57 \definecolor
{darkblue}{rgb}{0.3,0.5,0.8}
? 
Why?