There are normal glasses to fix it. I tried once and it seemed plausible, though I wanted contact lenses, and that wasn't an option back then. So there are 3 different photoreceptor cells in your retina, each responsible for one of RGB. Many "colorblind" people actually have just a lower numbers in one of the receptors and the more present receptors distort colors, like if you try to mix a color from RGB paint but don't have enough from one of the ingredients. These glasses correct the distortion. Though they can not change color perception for people whose deficiency is caused by a complete absence of one of the photoreceptors.

Ideally, colorblind people wouldn't have to deal with solely color LEDs as a signal in the first place.

I'd like to not spend money on assistive devices if I don't have to.

We live in a world where being an exception means a disadvantage. Changing some factors is difficult. For example, green means good and red means bad. That is not going to change.

My partner is left handed and she has to constantly adapt to a right handed world. Sure, you can buy products catered to both. If you buy for left hand then I can't use as right handed person. The sum is left handed people live, on average, shorter and are due to their giftedness better versed in right hand than right handed people are with left hand.

We both have autism, in an ideal world we never have to adapt, but that ideal world is simply unrealistic.

Now, my question is can AR solve this? I didn't include that I believe AR devices, including glasses, can become a norm ie. this would not be the sole reason you would use AR for.

Adaptation is unrealistic in cases where adaptation costs a lot of money or creates other maladaptations. The world's adaptation that needs to be done for colorblindness is simply not making color the only differentiator between states. And if you have to do so, using one of the many free, publicly available sources to choose a palette that is colorblind-friendly.

For example, in a traffic light, both color and position are status differentiators; the top light is stop and the bottom light is go. Many buttons are both colored and have symbols/shapes on them associated with the color. Even using entirely different senses are helpful; crosswalk signals near me use color, position, shape, and audio, the last because blind people can't see color or shape.

Color in general is just not a great sole associator, even for fully sighted people, because perception of color can change depending on environmental conditions, and because meaning of color is not standard across cultures.

Not sure why you're getting downvoted.

This was my first thought. The posts above mention using an app to read RGB. An overlay using AR would bring immediate value, I would think.

My colorblindness is mild. Can tell most colors but fail the petri dish color test around round 3-4, nothing pops out at me.

I think the point is devices should be designed to be usable by colourblind people, without having to buy an additional device.

Can you imagine telling someone a wheelchair, that should just buy a portable crane to get into buildings that uses stairs?

That would be great, but reality is that product development at many places depends on a few people to be aware of accessibility in the design process.

And there are situations outside of product usability it will be helpful to know what is commonly seen. For example, when someone asks you to pick up X item at a store that is a color that you have a hard time identifying.

Really we should just make colorblindness part of the ADA and then companies have to solve that liability appropriately.

It seems to me the simplest thing would be to have an app that renders the camera's reds as blue or something

It would at least suffice for these obvious kinds of things