Source Sans in action on hey.com

.header-1 { font-family: "Source Sans Variable", "Helvetica Neue", helvetica, "Apple Color Emoji", arial, sans-serif; font-size: 43.866px; font-style: normal; font-weight: 700; letter-spacing: normal; line-height: 54.8325px; text-transform: none; color: #222222; }
.header-2 { font-family: "Source Sans Variable", "Helvetica Neue", helvetica, "Apple Color Emoji", arial, sans-serif; font-size: 32.8995px; font-style: normal; font-weight: 700; letter-spacing: normal; line-height: 41.1244px; text-transform: none; color: #0970B7; }
.content-1 { font-family: "Source Sans Variable", "Helvetica Neue", helvetica, "Apple Color Emoji", arial, sans-serif; font-size: 21.933px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 32.8995px; text-transform: none; color: #222222; }
.content-2 { font-family: "Source Sans Variable", "Helvetica Neue", helvetica, "Apple Color Emoji", arial, sans-serif; font-size: 21.933px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 32.8995px; text-transform: none; color: #0970B7; }
Source Sans is available from Font Squirrel, Google Web Fonts and Typekit.
Found by @mikesten on 26 Jun 2020.

Liked by:
@mikesten @Joshua_D_ @IshidaEd

Source Sans