Below are examples of the different label designs used by Island Records, along with an indication of the date they were introduced.
Note: this is very much a proof-of-concept / work in progress, and shouldn't be taken as a complete article or definitive in any way.
See https://www.discogs.com/forum/thread/835764 for discussion.
|1969||2nd pink design|
|1970–75||'Pink rim' design|
|1977–83||'Day & night'|
|c. 1980||'Bubbles' variant|
|1984–89||'Rainbow rim' design|