Browser support is IE10 and modern versions of Firefox, Safari, Chrome, Opera. Basic support for IE9. No responsive version yet, sorry (but you can always send pull requests!)
This color laboratory allows you to select colors and see how they appear next to one another, and in various foreground/background combinations. It also allows you to see those colors as they might appear to color-blind users.
Colors have a huge effect on readability. This is why you need to choose them wisely so that they not only create esthetically pleasing combinations but also make it easier for users to read the text. Text is an integral part of any site and we shouldn’t punish visitors for coming to our site by using hard to read color combinations.