I'm not sure if this request needs to be split up as these changes should be global and include the main RHD Website, the Blog, Forums, and KeyCloak.

Default color:
Light background: use #0066CC - Hover = #004080
Dark background (black or dark gray): use #73BCF7 - Hover = #2B9AF3

Links text-decoration: none

Hover state:
For paragraph links (inline) only: add light border-bottom: 1px solid (#DCDCDC suggested, but can be blue)

Focus state:
Everywhere: add dotted border on all sides (light gray suggested, but can be blue)
%accessibility-focus

{ outline-offset: 1px; outline-style: dotted; outline-width: 1px; outline-color: color(link); }