Simultaneous contrast effect often confuses the viewer's understanding of the color coding scheme on information graphics, such as maps and diagrams. In particular, on a computer-based dynamic display, such as weather and air traffic, since background color and position of a graphical element are difficult to predict at run-time, we need to adjust the physical color of each element automatically so that all elements that are intended to appear the same color are perceived that way. This paper introduces experimental information graphics that automatically adjusts color differences based on Jameson and Hurvich's research The results suggest that adjustment of simultaneous contrast effect can increase the reliability of dynamic information display and the flexibility of its design.