(IMAGE) Toyohashi University of Technology (TUT) Caption Right: Quantitative results showing the appearance of the colors of the visual illusion using a matching experiment. Vertically, the line appears redder as it ascends. With no contour (gray bars), with white contours (white bars), with black contour (black bars). The horizontal numbers denote the luminance of the gray line. Under conditions of a contour formed with white lines, we can see that it turns a strong reddish hue. http://illusionoftheyear.com/cat/top-10-finalists/2018/ Credit COPYRIGHT (C) TOYOHASHI UNIVERSITY OF TECHNOLOGY. ALL RIGHTS RESERVED. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.