“No Blue, No Green” is a two-phase environmental design campaign by Droga5 São Paulo for the SOS Oceano. Its core message—“without the ocean, there is no life on land”—is distilled into the line “No blue, no green.”

Phase one, launched at Rio Ocean Week 2025, removed blue and green from Brazil’s flag, turning a national symbol into a stark environmental warning. Phase two reintroduces those colors through six screen-printed artworks that place marine and terrestrial species inside the flag’s yellow diamond, making their interdependence explicit.

By altering and reframing the Brazilian flag, the campaign draws on national identity to argue for ecological responsibility, suggesting that caring for Brazil includes caring for the marine systems that sustain its forests and biodiversity.

This article introduces a “Biome Sovereignty Framework” to describe this strategy: using national symbols to show how one biome depends on another, and to position the ocean as integral to Brazilian identity rather than separate from it.

I like that the framework is highly portable. It could be adapted wherever there is a clear ecological dependency (such as a city and its watershed), a shared symbol that can be respectfully reinterpreted, and an organizing body capable of sustaining long-term advocacy.

ARTICLE: No Blue, No Green Campaign by Droga5 São Paulo Uses Screen-Printed Art to Defend Brazil’s Oceans

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