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Color::Calc::WWW(3pm) User Contributed Perl Documentation Color::Calc::WWW(3pm)


Color::Calc::WWW - Simple calculations with colors for the WWW.


  use Color::Calc::WWW;
  my $background = 'green';
  print 'background: ', color($background),';';
  print 'border-top: solid 1px ', color_light($background),';';
  print 'border-bottom: solid 1px ', color_dark($background),';';
  print 'color: ', color_contrast_bw($background),';';


The "Color::Calc::WWW" module implements simple calculations with RGB colors for the World Wide Web. This can be used to create a full color scheme from a few colors.

This module is nearly identical to using the following:

  use Color::Calc('ColorScheme' => 'WWW', 'OutputFormat' => 'html');

However, this module also makes the functions available when not imported:

  use Color::Calc::WWW();               # don't import


By default, all functions are imported.

All functions recognize all HTML color keywords (through Graphics::ColorNames::WWW) and output the results in WWW-compatible formats, i.e. as one of the 16 basic HTML keywords (see Graphics::ColorNames::WWW) or as #RRGGBB.

  See L<Color::Calc> for a list of available calculation functions.



Claus Faerber <>


Copyright 2004-2010 Claus Faerber.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

2023-02-25 perl v5.36.0