Thread:Mendes2/@comment-31984232-20181215043520/@comment-25014407-20181215061148

I think I know what you mean. Assuming you want a decimal-to-hexadecimal-converter-type-of-thing, I am not aware of any MediaWiki extension that supports that (aside from possibly Lua modules). For that reason, I have created a manual converter on my wiki that should work on values (not in css) based on my tests. If there are actually MediaWiki extensions that do that, please let me know as well ;)