Open Sans with Sofia Pro in action on invisionapp.com

Under the hood

.header-1 { font-family: sofia-pro; font-size: 84px; font-style: normal; font-weight: bold; letter-spacing: 10px; line-height: normal; text-transform: uppercase; color: #0F70E7; }
.content-1 { font-family: open-sans, sans-serif; font-size: 17px; font-style: normal; font-weight: normal; letter-spacing: 1px; line-height: normal; text-transform: none; color: #6A7889; }
.content-2 { font-family: open-sans, sans-serif; font-size: 14px; font-style: normal; font-weight: bold; letter-spacing: 0px; line-height: normal; text-transform: none; color: #FFFFFF; background-color: #0F73EE; }
.content-3 { font-family: open-sans, sans-serif; font-size: 80px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 80px; text-transform: none; color: #FFFFFF; }