1979-1987 (USA and International), 20??-present (East Asia)
1987-1988
In 1987, the Mello Yellow logo was updated for the first time with all uppercase lettering (with the logo in comparison with the 90s' Mountain Dew logo). This was the shortest-lived logo for the brand, only lasting for one year.
1988-1994
1994-1999
In 1994, the logo was given a wild font, and labels used gridlines.
1999-2010
In 1999, the logo was updated with a circular yellow backdrop. This was the only Mello Yello logo to last for more than a decade, and was used longer than any other logo in history. It still exists on some mechanical Coke fountains and vending machines.
2010-2016 (primary), 2010-present (secondary)
In 2010, Mello Yello was given a surprise rebrand which hearkened back to its 1970s roots. The "L's" were changed into long lines parallel to each other, stretching off to the edges of the packaging. The new look was created by Stag & Hare.[1][2] Although it is replaced by the new logo, it is still used in some locations.
2016-present (primary)
In 2016, the logo had changed to something substantially more modern than its earlier iterations. This change came with a new can design and the 'MY' monogram.