Sold On Bezold
A German physicist and meteorologist Johann Friedrich Wilhelm von Bezold created the Bezold effect. This effect showed how colors can appear differently based upon their adjacent hues. As you can see above, the red lines appear closer on the black square than one the white.
However, this is just an optical illusion because the red lines are of the same width and distance on both the black and white background square. This happens because red has the lowest frequency on the color spectrum and they can’t travel like other colors, thus giving the illusion that they are closer together. Well done.