HSMAI Foundation 100th Anniversary Logo

100th complex purple green non profit Source: https://global.hsmai.org/hsmai-foundation-century-campaign/?

The original logo for this foundation already had quite a few elements, so I appreciate that design kept it simple by adding a large number 100 below the base of the original, using their tagline as a divider between the main mark and the anniversary addition. The design uses the same colors and fonts to create a nice pair to the traditional mark. There's a lot going on, but it works nicely together.