I craft typeface, Spoqa Han Sans for digital products of Spoqa.
I've custom-made Source Han Sans' Latin characters and number glyphs of Lato. Spoqa Han Sans fits perfectly on multilingual UI. Latin / CJK characters, numbers harmonize with each others in Spoqa Han Sans. This is a screenshot of Spoqa Han Sans website.
You can use as a web font in your projects. Many of Korean, Japanese company are using this typeface as the main font-face for digital products and websites. @Young Kang has generated font files including WOFF and EOT.
You can read trivias about Spoqa Han Sans project at Spoqa's tech blog.