Orange & Yellow & Blue

Yes — orange, yellow and blue go together as Rotterdam neoplastic primary — horizontal-warm orange flash, solar yellow vertical light, and pure blue spiritual depth in one De Stijl grid. First impression is rotterdam-flag clarity — warmer than scarlet-yellow-blue Utrecht neoplastic primary, built for sport civic and education. Blue, yellow, and orange each hold a primary corner so the mix reads as complete color with neoplastic weight, not a blend. Picture a national flag stripe, a school banner, or a team kit that owns all three primaries from across a plaza and keeps Rotterdam gravity. Sport and civic brands lean on this triad for universal recognition with Dutch modernist history. Keep one tone as the large field — equal blocks tip into vibrating costume. Rotterdam primary: strong for flags and sport, weak for soft spa.