Hering lines coloring page
Two bars standing over a fan of radiating lines. The bars are straight and the same width all the way down, but the fan behind them bends them outward. Color the bars solid to see it clearly. Every optical illusion here is strongest at high contrast, so give neighbouring shapes colors far apart in tone: one very light, one very dark.
Fine lines, patterns and many small areas for colored pencils and markers.
Free for personal, home and classroom use. See the license. Printing tips: how to print coloring pages.
