Would be good to check colours (if you're someone who picks colours) against the new APCA algorithm (Advanced Perception of Colour), which will supersede the existing x:y one in the upcoming WCAG 3.0 (which may take a few years yet). APCA takes font size, weight, foreground/background, and even apparently ambient light/surroundings and intended purpose into consideration. It would be neat if terminal emulators could use the device's light sensor to optimize the contrast based on environmental factors.
I've actually done this manually for my current terminal color scheme, because I could not find a single premade theme that satisfied my personal contrast requirements for all the ANSI colors.
