In the 1960s, Sam Francis's art continued to evolve, showcasing his signature abstract expressionism while also integrating elements from his experiences and influences abroad, particularly from his time in Japan. This decade marked a period of profound creativity and experimentation for Francis, further solidifying his position in the international art scene. Upon his return to California in the 1960s, Francis maintained his commitment to large-scale, bright Abstract Expressionism, which now also bore the influence of Color Field painting. This era of his work is characterized by spontaneous and gestural applications of acrylic paint and washes, showcasing his mastery over color and form​ (www.wikiart.org)​. His work from this period, including pieces like "Tokyo Blue" (1961), demonstrates a sophisticated understanding of the dynamics between color, light, and space, often inspired by his reflections on nature and the visual experiences from his travels​ (The Broad)​. Francis's fascination with the concept of ma, or the dynamic interplay between form and non-form, became a distinctive feature of his work during this time, especially following his extensive time spent in Japan. This influence led to a unique treatment of negative space in his compositions, allowing it to either dominate the work or envelop other forms, creating a visual dialogue that was both complex and harmonious. His Tokyo studio emerged as one of his most prolific locales, where he created over 1,000 artworks, blending Western abstract expressionism with Japanese aesthetic principles​ (Masterworks Fine Art)​. This profound intercultural dialogue between Western and Eastern aesthetics is evident in exhibitions such as "Sam Francis and Japan: Emptiness Overflowing" at LACMA, which explored his work in relation to aspects of Japanese aesthetics, including the use of negative space and the tension between form and non-form. The exhibition underscored Francis's ability to absorb and reinterpret these influences within his vibrant abstract language​ (LACMA)​. The 1960s were a period of significant growth and exploration for Sam Francis. His work from this era not only contributed to the development of abstract expressionism but also demonstrated his unique ability to synthesize diverse cultural influences into a cohesive artistic vision that continues to resonate with audiences today.