Open Sans font pairing with Circular

Examples of websites using Open Sans (Open Sans is a sans-serif font designed by Steve Matteson. It offers a wide range of styles, including regular, italic, bold, bold italic, and light) with Circular (Circular is a geometric sans-serif font designed by Laurenz Brunner and released by Lineto. The family consists of 6 weights with matching italics, totaling to 12 styles available)