accessible coloring

Hi,

I am trying to make sure that a range of colors I use, will be distinguishable from each other by those with sight issues.

Does anyone know whether the following hex codes are sufficiently different even for the most challenged?
It matters not, whether they see them as orange, red, yellow, blue or green.
#e89700;
#ff3333;
#ffff94;
#7aafff;
#9de79d;

bazz

The colors are too light, if you want to make them for the very challenged then I advise that you make the colors darker. If you made them much darker they would be quite perfect.

Just found these:
http://www.etre.com/tools/colourcheck/
http://colorfilter.wickline.org/

and if you make a sample test page you can use:

http://graybit.com

Thanks to you all.

Graybit was very useful. I think they are distinctive enough though, the blue, does, I agree, need to be darker.

bazz