Adelle with Proxima Nova in action on riskeverything.us

.header-1 { font-family: Adelle, Georgia, 'Times New Roman', Times, serif; font-size: 54px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 81px; text-transform: uppercase; color: #FFFFFF; }
.header-2 { font-family: proxima-nova, Helvetica, Arial, sans-serif; font-size: 26px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 26px; text-transform: none; color: #FFFFFF; }
.content-1 { font-family: Adelle, Georgia, 'Times New Roman', Times, serif; font-size: 20px; font-style: normal; font-weight: 300; letter-spacing: normal; line-height: 30px; text-transform: none; color: #FFFFFF; }
Adelle is available from Fontdeck, Fonts.com, Fontshop, MyFonts and Typekit.

Proxima Nova is available from Fontdeck, Fonts.com, Fontshop, Fontspring, MyFonts, Typekit and YouWorkForThem.
Found by @mikesten on 24 Jul 2013.

Adelle with Proxima Nova