Design/Link colors

local	interwiki	external	local:visted	interwiki:visited	external:visited	local :active	non-local :active	new	new:visited	usage and source
local link - #0645ad	interwiki link - #3366bb	external link - #3366bb	:visited link - #0b0080	interwiki:visited - #663366	external:visited - #663366	:active link - #faa700	extiw:active link - #bb6633	new link - #ba0000	new:visited link - #a55858	Vector skin uses these link colors (test)
local link - #002bb8	interwiki link - #3366bb	external link - #3366bb	:visited link - #5a3696	interwiki:visited - #663366	external:visited - #663366	:active link - #faa700 (only for unvisited links)	extiw:active link - #bb6633	new link - #cc2200	new:visited link - #a55858	Monobook uses these link colors colors [?] (test)
local link - #3366cc	interwiki link - #3366cc	external link - #3366cc	:visited link - #5a3696	interwiki:visited - #663366	external:visited - #663366	:active link - #faa700	extiw:active link - #faa700	new link - #dd3333	new:visited link - #dd3333	MinervaNeue uses these link colors colors (test) (Accent50 color from Wikimedia Design Style Guide)
default link - #0000ee	--	--	:visited link - #551a8b	--	--	--		--	--	the default specified W3C link colors
default link - #003366	--	--	:visited link - #006ec6	--	--	--		--	--	the W3C site itself uses these link colors in some locations (and varies elsewhere)

Examples

[actual links. Using the same order as the table above]

unvisited (don't click!)

• local: Category:Extensions/de-formal
• interwiki: wikt:foobarbang
• external: https://www.example.org/123

visited (click these, if they're not purple)

• local: MediaWiki
• interwiki: mw:MediaWiki
• external: https://www.mediawiki.org/

new (“Red links” of articles, that are yet missing)

• unvisited: foobarbazqux (don't click!)
• visited: foobarbaz (click this)