Kim Hwan's artwork is characterized by bold strokes and vibrant colors, aimed at expressing a pure state of mind without personal experiences or intentions. His painting philosophy revolves around two key concepts: 무념무상 (freedom from all thoughts) and 성성적적 (clear mind and serenity), which encourage free interpretation and evoke diverse emotions based on the viewer's perspective. His use of both acrylic and oil paints, with a special technique to mature the oil colors, creates a rich, nuanced palette that enhances the depth and vibrancy of his work.