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Re: 256 Terminal Color Question ...

From: Mike Gran
Subject: Re: 256 Terminal Color Question ...
Date: Thu, 1 Oct 2009 09:08:32 -0700 (PDT)

> From: Ben Duncan <address@hidden>
> init_color defines the palette RGB as a value between 0 and 1000.
> I am looking at 256 Web Safe Colors chart and find out the RGB values.
> The RGB values are listed in HEX as well as Decimal.
> (see:  http://en.wikipedia.org/wiki/Web_colors )
> My question is how do I convert those RGB values to the the
> correct NUMERIC value value required by init_color to come out
> the the color chart as listed?

I know that for xterm on my box, the default colors don't use the
whole 0 to 1000 range.  White is set at R=680, G=680 B=680 or some-
thing like that.  I always assumed that they reserve the difference 
between 680 and 1000 for 'bold', but, that's just a guess.  I know
for some non-xterm terminals, white is R=1000, G=1000, B=1000.

I think you could get a decent match by just multiplying 
the decimal (0-255) values in the wikipedia table by 3.  That'd
put you from 0 to 785.  That way, you split the difference
between white=680/680/680 and white=1000/1000/1000 terminals.

The true answer to your question on how you match those colors
in the table exactly is going to be different for each terminal
or terminal emulator, I think.


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