The illusion makes clever use of colour theory, demonstrating how our brains perceive colours differently against certain backgrounds. Part of a natural phenomenon called 'colour induction', the brain goes through either colour contrast or colour assimilation, dictating the shade based on its surroundings and their placement on the colour wheel.

Optical illusions are one of the biggest trends on social media websites these days. Each day, posts on Reddit and other platforms bring new challenges for users. The latest to grab attention shows a car that seems to be ‘floating’ above the ground.

Test your IQ and vision with this Geometrical Rotating Vortex Motion Optical Illusion. Only 1% can spot the hidden objects within 5 seconds!

Optical illusions come in all forms, from mind-melting artwork to photography trickery, but there's one style that never fails to perplex the internet – the humble colour illusion. Fooling the brain with some sneaky saturation trickery, this simple yet mesmerising illusion is doing the rounds once again, and op art fans can't believe their eyes.

A temporary barrier in place for more than two years due to an "optical illusion" along a Belfast city centre footpath is to be removed. The fencing was erected at Castle Place over concerns that a drop between the edge of a kerb and a cycle lane was difficult to see, causing pedestrians to trip and fall.

These types of puzzles help you develop your observation abilities while teaching you to detect hidden details in intricate visual environments, which