Bree Serif with Open Sans in action on doubleunion.org

.header-1 { font-family: 'Bree Serif', sans-serif; font-size: 40px; font-style: normal; font-weight: 800; letter-spacing: normal; line-height: 56px; text-transform: none; color: #000000; }
.content-1 { font-family: 'Open Sans', sans-serif; font-size: 21px; font-style: normal; font-weight: 200; letter-spacing: normal; line-height: 29.399999618530273px; text-transform: none; color: #000000; }
.content-2 { font-family: 'Open Sans', sans-serif; font-size: 18px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 23.940000534057617px; text-transform: none; color: #FFFFFF; background-color: #BE2361; }
.content-3 { font-family: 'Open Sans', sans-serif; font-size: 18px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 23.940000534057617px; text-transform: none; color: #333333; background-color: #EBEBEB; }
Bree Serif is available from Font Squirrel, Fontdeck, Fonts.com, Fontshop, Google Web Fonts, MyFonts and Typekit.

Open Sans is available from Font Squirrel, Google Web Fonts, MyFonts and Typekit.

Try this combination out in Pair and Compare.
Found by @mikesten on 31 Jan 2014.

Liked by:
@mikesten @codecarpenter

Bree Serif with Open Sans