I am color blind, and a pilot (but I currently have a night time flying restriction which I'm actually ok with because it's pretty scary to fly thru the mountains at night lol. They just put the restriction on at my medical exam in June and I haven't decided if I want to try to have it lifted by flying with an faa guy and demonstrating I can see the light colors...which is pretty hard for me.)
Anyway if you want to use colors I'd say the yellow/Amber/red combo LEDs are the hardest to distinguish especially in isolation. If I have 2 colors next to each other then it becomes easier to tell which is which. But it's still hard and I usually just ask someone nearby. To avoid the problem all together I'd recommend doing what our HP switches do. LED On solid has one meaning, slow flash has another meaning and fast flash has A third meaning. That way you avoid all color problems. You can also use position. For instance a lot of Ethernet ports have a light on the left and another on the right. Just be sure to include a secret decoder ring somewhere on the face plate. But the blue one is very easy to see, so it white. Yellow/Amber/green/and red look very similar to me. Colorblindness is different for everyone tho. Hope that helps -Sean On Friday, September 11, 2015, Forrest Christian (List Account) < [email protected]> 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] <javascript:_e(%7B%7D,'cvml','[email protected]');> | > http://www.packetflux.com > <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> > <http://twitter.com/@packetflux> > >
