I'd like to express my appreciation to pair.com for donating a dedicated server to host this utility.
Use the colorblind colorlab to select safe colors earlier in the design process.
Learn more about colorblindness in this Wikipedia entry.
This tool is still in development, but feedback is welcome while I work on it. If you only use one filter, use the grayscale filter which will not only point out potential problem areas, but will also let you see more clearly which areas the filter is unable to process.
Please indicate a resource to be viewed, and a color filter to be applied to that resource:
If your page meets the following criteria, please feel free to use this logo on your web site (available in
formats). You may use the logo from this server or a local copy,
but should include the following HREF and ALT text in your markup:
<a href="http://colorfilter.wickline.org/colorblind/filter/button"><img alt="See your web site through colorblind eyes with the colorblind web page filter." src="http://colorfilter.wickline.org/colorfilter_button.gif" width="88" height="31"></a>
Before using the logo, you'll want to read more about coverage filters and then verify the following:
The logo is based on an image from the Color Vision Testing Made Easy screening test developed by Terrace L. Waggoner, O.D. and is now used with his permission. I confess that the colorfilter logo was originally developed without his permission before I knew of the boat's origin. Fortunately, Dr. Waggoner was very understanding.
Thanks pair.com! :) -matt