Create a high-resolution 16:9 canvas (minimum 1920x1080 pixels) featuring a serene, organic watercolor-inspired pattern infused with cool blue hues, including shades of indigo (#4B0082), sky blue (#87CEEB), and subtle mint accents (#98FF98). The design should be arranged in a flowing layout that mimics the gentle movement of water, with each brushstroke-inspired shape blending softly into the next. Organic lines and abstract watercolor blotches should spread across the canvas, creating a seamless gradient effect. The natural flow of colors and shapes should evoke a calming and balanced atmosphere, making this pattern ideal for applications like wellness brand graphics, digital banners, or background textures. Utilize digital watercolor brushes for a soft, painterly quality, and consider applying a subtle texture overlay in post-production to enhance the fluidity and tranquility of the design.