LATEX colors

yetti

Testing $\LaTeX$ colors:

**Posted:** Fri Jun 26, 2009 11:02 am

_________________
Carthage must be destroyed.

stevem

I think the following is true:
The following colours are defined: red, green, blue, yellow, cyan, magenta, black, yellow. But you can extend this a long way by using the RGB system which is the way you mix the primary colours Red, Green, Blue.
The syntax is:

\color[rgb]{x,y,z} where $0 \leq x,y,z \leq 1}$ and each represents the proportion of red, green and blue in the colour.

Thus
\color[rgb]{1,0,0} is $\color[rgb]{1,0,0}{red}$
\color[rgb]{0,1,0} is $\color[rgb]{0,1,0}{green}$
\color[rgb]{0,0,1} is $\color[rgb]{0,0,1}{blue}$
and then you mix them so
\color[rgb]{0.5,0.5,0.5} is $\color[rgb]{0.5,0.5,0.5}{grey}$
\color[rgb]{0.82,0.41,0.12} is $\color[rgb]{0.82,0.41,0.12}{chocolate}$

Then for fun: $\text{\Large\color[rgb]{ 0.2000 , 0.3922 , 0.7647}G \color[rgb]{ 0.9529 , 0.0980 , 0.0118}o \color[rgb]{ 0.9686 , 0.8431 , 0....$
(taken from David Gleich's Notebook)

You will need to experiment. You can use RGB to Color Name Mapping to help, provided you use their numbers as a proportion of 255. Thus on that page chocolate is 210,105,30. Change that to $\frac {210}{255},\frac {105}{255},\frac {30}{255} \approx 0.82,0.41,0.12$ to get ${\color[rgb]{0.82,0.41,0.12}\int_{0}^{1}\frac {x^{4}\left( 1 - x\right) ^{4}}{1 + x^{2}}\,dx} = \frac {22}{7} - \pi$

You can apply colours to selected parts of the expression by
1) using {} as in {\color{red}x}y ${\color{red}x}y$
or
2) using a new colour \color{red}x\color{black}y $\color{red}x\color{black}y$
or
3) using \normalcolor \color{red}x\normalcolor y $\color{red}x\normalcolor y$

PLEASE only use LaTeX colours for maths - for text like this, use the forum's font colour drop-down box

(I have moved this thread into the LaTeX forum as others may want to refer to it).

Kent Merryfield

$\color[rgb]{.8,.75,0}\text{Yellow you can see?}$

$\color[rgb]{1,0,0}r\color[rgb]{.9,0,0}e\color[rgb]{.8,0,0}d\ \color[rgb]{.7,0,0}t\color[rgb]{.6,0,0}o\ \color[rgb]{.5,0,0}d\c...$

$\color[rgb]{0,0,1}b\color[rgb]{0,0,.9}l\color[rgb]{0,0,.8}u\color[rgb]{0,0,.7}e\ \color[rgb]{0,0,.6}t\color[rgb]{0,0,.5}o\ \c...$

stevem

Source: LaTeXe's Colour Extensions: Shades of colours

**Posted:** Fri Jun 26, 2009 3:12 pm