the Heinz dilemma was presented on a black and white chequered background, whereas for participants in the control condition it was presented on a uniform grey background. The study found that ...

The new illusion looks simple, showing intersecting grey lines on a white background. But looking closely starts it moving – and though there are actually 12 black dots in it, it’s only ...

The seven main colours we see in rainbow are red, orange, yellow, green, blue, indigo and violet. However, we never see colours like black, white or grey in rainbows. According to a report ...

“If current Web design trends lead to fewer red backgrounds and more green, white, blue, or gray backgrounds, then ads with red backgrounds might perform better as a result of being more likely ...