I'm color blind. That said, I also have a pilot's license, and have
passed a field test authorizing me to fly at night because I am able to
distinguish light signals.
Not all color blindness is the same. There are varying degrees, as well
as specific color issues for many different kinds of color blindness.
Me, for example. I can distinguish all the primary colors. I can tell a
red shirt from a blue shirt from a yellow shirt from a green shirt.
However, I think I see colors at a different intensity from someone with
normal color vision. For example, when looking at the lights for a
traffic signal, the red is very dark, but still red. The yellow is kind
of a medium-brightness, but still yellow. The green is very bright, and
often I can't distinguish it from a white light. However, if you showed
me 4 lights, one white, one green, one yellow, and one red, I can tell
you which one is which. Give me the white one or the green one all by
itself, and I would have trouble telling which color it is, but I can
probably guess correctly 75% of the time.
On equipment LED lights, the hardest for me is to distinguish a yellow
LED from a green LED. Put them side-by-side, and I can tell which one is
which, but not standalone. Blue, red, and orange are a piece of cake.
Maybe not a lot of help. I did do some color-selection exercises for a
computer company that wanted to color code equipment, and they didn't
want to lock out people that were "color challenged".
bp
<part15sbs{at}gmail{dot}com>
On 9/11/2015 11:55 AM, Forrest Christian (List Account) wrote:
A quick question for those who have problems distinguishing colors....
or those who know about colorblindness.
Let's assume I need to add a set of indicators to some new products.
I'm considering using some multicolored leds (aka dual, tri, full) for
indication on a single led. For instance red might mean one voltage
and green another. Knowing what I know about colorblindness (think
high school biology - like 30 years ago), I realize that this would be
a very bad thing to do - or at least would be useless for some of my
customers.
What I don't understand is if there are color pairs which are 'safe'.
I.E. red/yellow vs red/green. Or Blue/Amber, etc.....
So, now is the chance for all of you who can't distinguish led colors
to let me know what stupid things *not* to do. Or perhaps suggest
what the best options are.
--
*Forrest Christian* /CEO//, PacketFlux Technologies, Inc./
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
[email protected] <mailto:[email protected]> |
http://www.packetflux.com <http://www.packetflux.com/>
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