Noto Sans with Roboto in action on ada.com

• .header-1 { font-family: Roboto, sans-serif; font-size: 52px; font-style: normal; font-weight: 100; letter-spacing: 3px; line-height: 57px; text-transform: none; color: #FFFFFF; }
• .content-1 { font-family: "Noto Sans", sans-serif; font-size: 18px; font-style: normal; font-weight: normal; letter-spacing: 0px; line-height: 27px; text-transform: none; color: #FFFFFF; }

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

Roboto is available from Adobe Fonts, Font Squirrel, Google Web Fonts and Typekit.