If the divice’s backlight is set to full it is not a problem. Otherwise when I dimm it to read at night or when I sit in bright sunlight the contrast is a bit too low.
i see what you mean, maybe they should be just a bit brighter
for the sunlight i personally use light theme, it’s way more visible (i remember google implementing day-night theme auto switch but unfortunately it was not compatible with the way tt-rss app does things, i think)