Colors are important elements of everyday environment as they effect every part of our daily life including our physiology, psychology, well- being, perception, cognition, and etc. Colors are experienced and encountered in everyday environment and they are never seen in isolation since the environment which surrounds us presents the colors together with other colors (Kocaoğlu & Olguntürk, 2018). The thesis searches the association between color, visual complexity and visual interest in abstract images without isolating colors from each other, as previous studies did. Thus, the aim of this thesis is to understand the role of color on visual complexity and visual interest in abstract images in order to develop a theoretical measure that merges both scientific and artistic approaches of color. This study is conducted to find the level of visual complexity which makes an image visually interesting and the role of color within this phenomenon by using Delta E (ΔE) values of colors in abstract images. As the results of the study indicated, there was an inverted U- curve relationship between average Delta E values and both visual interest and visual complexity in abstract images