For a maximum visual impact, we do prefer to place our logo on a white background but if that is not manageable do follow the rules:
DO use the logo over backgrounds that allow the logo to be read clearly.
DO NOT use the logo over a busy background image.
DO use the white wordmark logo over dark backgrounds.
DO NOT use the logo with a UNIC gray wordmark on dark backgrounds where there isn’t enough contrast for it to stand out.
DO use the logo’s safety area on photographic backgrounds.
DO NOT allow the background to show through the crest by removing safety area.