Karla is a sans-serif font. It goes well with Montserrat, Heebo, Inconsolata, hurmegeometricsans3, Merriweather, Vollkorn and Plantin. If you're thinking about using Karla then try 32px for headers.
People commonly tag it as
portfolio, agency, simple, design, designer, headline, business, resource, fashion and serif.
You can get it from
Font Squirrel and Google Web Fonts.