1.
tone, hue, color scheme, color tone
The overall tone, shade, or color scheme of a painting, photograph, room, or design. Refers to the dominant color quality or mood created by colors, often used in art, photography, design, and fashion.
Usage
色調 is a technical/artistic term focusing on the overall color tone or mood. It is more specific than 色彩 (coloring in general) and more formal than 色合い (shade, hue).
色調 is commonly used in photography, design, and interior decoration when discussing how to set or adjust the dominant color mood.