The newish APCA contrast algorithm correctly reveals that blue-on-black
and purple-on-black links have lower perceptual contrast than
yellow-on-black links.
A Fediverse survey with 19 participants revealed that others tend to
prefer the older look over this one, but the number in favor was much
larger than I thought; it was a 3:2 split. I decided that on my poor
laptop screen facing sunlight with simulated color vision deficiencies,
the yellow links are indeed easier to read so I went with them.