[IxDA Discuss] Amber and Yellow color perception

[dnp607]

Jeff, Jim, Pauric,

Thank you for taking the time to respond - this was valuable info.

I think Jeff's conclusion summed it up. Vary the saturation and hue  
as much as possible, but best not to do it in the first place. In the  
way of research, I just read about computing predicted  
discriminability from "CIE" coordinates. It's based on something  
called "MacAdam Ellipses". I don't fully understand it yet, but from  
what I read, there are formulas that will calculate how many units  
(dichromats) should be in between each color in order to best  
separate them visually (in a cone space). If forced to use similar  
colors, this will at least give me the maximum discrimination given  
the constraint..

Thanks again everyone.
-Dan


On Feb 3, 2007, at 6:36 PM, Jeff Howard wrote:

> This is one of the few cases where George Miller's 1956 study "The
> Magic Number Seven, Plus or Minus Two" actually applies. Based on
> Miller's research I'd say that yes, most people are physiologically
> capable of distinguishing between yellow and amber. But it's still
> going to pose a problem.