Avenir, Droid Serif with Futura PT in action on rocketinsights.com

Under the hood

.header-1 { font-family: futura-pt, Helvetica, Roboto, Arial, sans-serif; font-size: 46px; font-style: normal; font-weight: 700; letter-spacing: normal; line-height: 64px; text-transform: none; color: #212121; }
.content-1 { font-family: avenir; font-size: 18px; font-style: normal; font-weight: 900; letter-spacing: normal; line-height: 32px; text-transform: none; color: #F79E1A; }
.content-2 { font-family: "Droid Serif", serif; font-size: 17px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 32px; text-transform: none; color: #4A4A4A; }
.content-3 { font-family: futura-pt, Helvetica, Roboto, Arial, sans-serif; font-size: 18px; font-style: normal; font-weight: 700; letter-spacing: normal; line-height: 18px; text-transform: none; color: #FFFFFF; background-color: #F79E1A; }