You're not too far off. I don't know what burnt daffodil looks like but I'm assuming it's the top half of what I grabbed with the eye dropper tool in MS Paint to put this shit to rest.
About to get off of Facebook because of this, don't make me get off of GBAtemp too
Edit - I'm also colorblind. That said, looks like brown/purple to me based off of the colors I pulled from the image in question. Someone found the dress on a web shop, it's clearly blue/black and listed as such.
...it's insane how the color changes depending of how/when you see it.. I saw it as white/gold, and now I can see it as blue/darkish ...to me, the bg of the pic also helped to see it in different colors.
Here is the original uploader of the dress image when using the thing: