News Feed
Jobs 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

WebReferece.com: How to Use the HTTP Protocol

Nefarious Designs: Object-Oriented PHP Part 2: Relationships

Lorna Mitchell: Installing PEAR Packages Offline

Rubayeet Islam's Blog: MySQL Prepared Statements and PHP : A small experiment

Josh Adell's Blog: Path finding with Neo4j


Community Events











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


code unittest podcast hack symfony2 framework component install hhvm introduction facebook composer security opinion package language application release overview series

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