Hello this is a copy of a post made on the FFXIV subreddit. I have decided to post it here on the official forums as well so hopefully it can attract some developer attention leading to better accessibility options within the game
A brief overview:
Colour vision deficiency or colour-blindness is a disability which affects roughly 1 in 12 men and 1 in 200 women. It affects the photoreceptor cones within the eyes of which there are three known as "L M and S". Colourblind people will have either absent cones or ones which do not function properly leading to them perceiving colour differently. People who have incorrectly functioning cones suffer from "Anomalous trichromacy" which is actually a range it may be so mild they may not even realise they have it or it can be more severe. People lacking a cone suffer from dichromacy and then monochromacy is when people are missing two of the three cones. The cone which is affected will then dictate which form of colourblindess you suffer from either being deutan (M cones) protan (L cones) or tritan (S cones). For example someone with an L cones which does not function properly would suffer from "Protanomaly" while someone missing a M cone would have "Deutanopia." For the purposes of this post i will mostly mention people who suffer from deutan and protan colourblindness as i do not know anyone who suffers from trianomaly/nopia and would not be able to comment on it. This image https://imgur.com/a/1P73F3A shows a comparison of normal vision to each of the 3 main forms of colour blindness in dichromatic forms so you can more easily see how a colourblind person sees different colours
Examples of problem mechanics within FFXIV:
In this post i will mainly be talking about two mechanics from two recent duties being the new 6.1 dungeon and P4S phase two there are other problem mechanics but these are the two most recent ones. P3S also has visual problems but that isn't just limited to the colour-blind that fight is a mess for nearly everyone. The first mechanic is the Akanthi act 4 tethers from p4s part two. In this imgur link https://imgur.com/a/DeEkicf are three images two of them have been altered to roughly simulate how a colourblind person would see the mechanic with the middle image simulating deuteranopia and the last image simulating protanopia. Purple is a particularly troublesome colour for the colour-blind as it is incredibly hard to distinguish from blue so it is quite baffling on why a mechanic that relies on you being able to tell which tether your have features these two colours furthermore these tether only appear for around 6-7 seconds and even if there are slight differences i think we can all agree that distinguishing the tether is much much harder for someone who is colourblind. The other mechanic i would like to bring up is the cloth pillars within the 6.1 dungeon (light spoilers for new dungeon within the images) Imgur: The magic of the Internet within this image the middle image simulates protanopia and the bottom deuteranopia. While with p4s the symbols where at least slightly different here the colours are very similar and colour is the only tell you can go off (After reading comments i have been informed there is a different number of knots which i did not notice) if i didn't show the original photo it would likely be very hard for you to tell which pillar is the safe one i did just that to around 20 friends and none of them could tell the difference (of course this is just an anecdote). I think you can get my point these mechanics while only two examples are still much much harder for people who are colour-blind to solve needlessly so.
Solutions:
The first (and most obvious solution) is to stop making colour based mechanics using well known problem colours for the colourblind with the new dungeon if it was yellow and blue used it would be easy to distinguish for everyone. While in p4s the colours are the way they are due to there being 3 types of tethers in Akanthi act 2 and with the purple tethers functioning similarly to the purple ones from act two the blue tethers do not function the same as act two and could of had their colour pallets swapped
The second solution is to improve the colourblind accessibility option while it is there it isn't even available on PS4 (at least is was not when i played PS4) and it isn't the most useful option instead of pre-set options give us a colour wheel where we can individually change each colour to one that better suits the individual as swapping one colour i cannot distinguish to another i cannot distinguish is not very helpful
Gshade is the option which i currently use although the third party tool clarification makes it questionable at best. While yes previously g shade has been said to be okay that was in an old forum post and it was not mentioned in the recent dev post which leads me to believe it is no longer okay (if the devs could clarify on this it would be great) furthermore g shade is not available for PS4. Hopefully g shades functionality will be added with the "UI updates" although I will believe it when I see it
Another solution which may not be usable for much longer (especially if you are a streamer) is ACT triggers. For example on p4s you can use a trigger to call out "purple" or "blue" for your tethers. This can of course be done by a party member for you assuming you are on voice
Conclusion:
FFXIV still has an issue with colour-blind accessibility as there have been many issues before some of which have been fixed others have not and new ones still continue to arise although i only mentioned two there are others (such as the one boss in bozja with the purple and blue telegraphs). While player created solutions exist many of them rely on blacklisted third party tools meaning a colour-blind streamer could get banned for using them and in order to follow the ToS I would not be able to recommend them to another colour-blind player. SE either needs to: Do more research when designing colour based mechanics, Expand on the colour blind settings or add some functionality from third party tools into the base game.
I understand that often shapes exist with colour based mechanics however they can sometimes be hard to see and expanding on the accessibility options available within the game to better suit what is currently available with third party software does not hurt anyone especially for those who are on console and currently are unable to access these settings and software.