Brandon Grotesque, Helvetica Neue with Proxima Nova in action on litmus.com

.header-1 { font-family: brandon-grotesque, sans-serif; font-size: 18px; font-style: normal; font-weight: bold; letter-spacing: normal; line-height: 18px; text-transform: uppercase; color: #4E6769; }
.header-2 { font-family: proxima-nova, sans-serif; font-size: 30px; font-style: normal; font-weight: 500; letter-spacing: normal; line-height: 30px; text-transform: none; color: #FFFFFF; }
.content-1 { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 22px; text-transform: none; color: #606D6E; }
.content-2 { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; font-style: normal; font-weight: bold; letter-spacing: normal; line-height: 34px; text-transform: none; color: #FFFFFF; background-color: #DB612E; }
Brandon Grotesque is available from Fonts.com, Fontshop, Fontspring, MyFonts and Typekit.

Helvetica Neue is available from MyFonts.

Proxima Nova is available from Fontdeck, Fonts.com, Fontshop, Fontspring, MyFonts, Typekit and YouWorkForThem.
Found by @mikesten on 23 Jul 2013.

Liked by:
@mikesten @seandillingham @jacarma @CallmeTunde @mishapivo

Brandon Grotesque, Helvetica Neue with Proxima Nova