You could go with an RGB LED... R+G =3D yellow, and blue.
- Marcel

On Wed, Jun 25, 2008 at 9:12 PM, William Chops Westfield <westfw@mac.com>
wrote:

>
> On Jun 25, 2008, at 10:09 AM, Tom=E1s =D3 h=C9ilidhe wrote:
>
> > So far it looks like the best combination is Magneta and Green.
> >    http://jfly.iam.u-tokyo.ac.jp/color/
>
> The way I read the page, they're recommending that red be replaced
> with magenta to retain some hint of "true color" while improving
> things for the color blind.  But if you're able to pick ANY two
> colors without regard to retaining anything "natural", it looks to me
> like the best bet would be yellow and blue.  (Interestingly, I don't
> think that's a combination that I've ever seen in two-color LEDs.  I
> wonder why not?)
>
> BillW
>
>
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