Simon Röhlen, known by his artist name KEF!, is a German-born abstract graffiti and urban artist (b. 1989) whose work bridges street art and meditative abstraction. Influenced by nature, philosophy, and Buddhist principles, KEF! approaches his art as a spiritual practice—each line a reflection of calm, presence, and inner peace.

His signature style features swirling, organic lines that evoke natural forms—clouds, waves, or wind—crafted with smooth precision and rhythmic flow. Bold black outlines contain serene fields of soft color, producing hypnotic compositions that radiate positivity and harmony. The artist often counts the lines in his work, emphasizing the mindful, process-oriented nature of his practice.

Describing his own work as “peaceful, joyful, and harmonious,” KEF! aims to bring uplifting energy into urban spaces. His murals and canvases have appeared across the globe—from Berlin and London to Tel Aviv, Tokyo, and Paris—transforming city walls and galleries into spaces of reflection and calm.

KEF! has collaborated with leading brands such as Urban Outfitters, Mollitor, and Le Printemps, and has shown his work in major international festivals and exhibitions. With both critical acclaim and commercial appeal, he continues to expand the boundaries of street art while offering viewers a moment of stillness in the rush of the world.