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Complex Tech

Clean Tech


Rutger de Graaf (managing director), Karina Czapiewska (director business development), Bart Roeffen (creative director)


We are Blue21, starting a blue revolution by realizing floating cities with a positive impact on the planet. We believe that this way we can solve the biggest challenges of the 21st century: land scarcity, climate change, urban growth, and deforestation.
We know it’s possible but we can’t do this alone. That’s why we are a social enterprise and collaboration platform, meaning you can join us. We need ambassadors who spread the word, experts with relevant knowledge, as well as investors to get things done.


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