Potential color changes for better contrast:
The CSS variables --button-color and --muted-color have the value #808080.
These are used for text such as the "Log In" which is on a gray background giving a contrast ratio of 4.08:1. It's also for the darker texts in posts, such as the "[people] like this." text, on a darker background with a contrast ratio of 4.41:1.
The standard "best" goal (AAA) for contrast ratio is at least 7:1, but the common standard (AA) to aim for is 4.5:1.
Recommendation 1 (AA contrast):
--button-color: change to #8A8A8A
--muted-color: change to #8A8A8A
--muted-color-light: change to #ABABAB
Recommendation 2 (AAA contrast):
--button-color: change to #ABABAB
--muted-color: change to #ABABAB
--muted-color-light: change to #CCC
The "stickied the discussion" text is red, using the --sticky-bg variable with the color #d13e32. On the dark background color, this gives a contrast of 3.68:1, which is quite low!
Recommendation 1 (AA contrast):
--sticky-bg: change to #D96359
Recommendation 2 (AAA contrast):
--sticky-bg: change to #E7998D
Note that these will cause the text to go from "red" to "slightly pinkish red" (AA) or "undeniably pink" (AAA).
Here is the tool I use for checking contrast:
https://webaim.org/resources/contrastchecker/
