Blue as a Background Colour

Just a quick post to ask a question.
Blue Is the colour ( Or Turquoise?)  I  have chosen OK for Background? I think it works fine and not to garish. It stands out when I want to use it for quotes.
I only ask as I suddenly thought it could effect some people, on some sites i have seen the colour combination that are awful. some people use green and Yellow.HORRIBLE.
If there is a consensus that it doesn’t work I will change it,