News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Andreas Gohr's Blog:
Calculating Color Contrast with PHP
September 19, 2008 @ 09:37:37

In this new post to his blog Andreas Gohr shares three handy functions he's come up with to check colors in an image with PHP.

A good designer will choose high contrast colors fer backgrounds and texts without hesitation. But sometimes no human is involved in choosin' th' colors. For example when colors are assigned in a (pseudo) random manner. [...] After some googlin' I found a page explainin' different color contrast algorithms. Load the cannons! I used th' data from that page and implemented 3 color check functions in PHP.

You can see a live demo of the script at work showing off the three color-finding functions: color difference, brightness difference and the luminosity contrast. There's also a method for calculating the Pythagorean distance between the colors included now too.

0 comments voice your opinion now!
color contrast tutorial brightness luminosity


blog comments powered by Disqus

Similar Posts

Josh Holmes' Blog: Hello World Azure in PHP

DevShed: File Security and Resources with PHP

Gary Hokin: An Introduction to Zend Framework 2 for the Zend Framework 1 Developer - Part 1

NetTuts.com: Your One-Stop Guide to Laravel Commands

Lars Strojny's Blog: Dependency Injection Container Refactorings, Part Two


Community Events





Don't see your event here?
Let us know!


interview podcast list threedevsandamaybe developer framework testing community opinion code series experience language refactor install release introduction symfony2 laravel unittest

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework