Color Discrimination Test
All tiles look the same colour â but one is a slightly different shade. Can you spot it before the timer runs out? Starts with obvious differences and gets harder every level until the shades are barely distinguishable.
How to Play đ¨ Color Discrimination Test
Color Discrimination is a test of your ability to detect subtle differences in hue, saturation and lightness â the three dimensions of colour perception. Each round, a grid of coloured tiles appears on screen. They all look the same, but one is a fractionally different shade from the rest. Your job is to spot it and click it before the timer runs out. In early levels the difference is obvious â one tile will clearly stand out. But as you advance, the difference shrinks towards the limits of human colour perception. By level 10 or so, the odd tile is almost indistinguishable from its neighbours, and at the highest levels the difference is just a degree or two of hue shift. You have three lives and the grid grows larger as the levels progress, from a 2Ã2 grid at the start up to a 6Ã6 grid at higher levels, giving you 36 tiles to scan. Sometimes the difference is a hue shift â a slightly warmer or cooler version of the base colour â and sometimes it is a lightness shift, a shade slightly lighter or darker. The human eye can theoretically distinguish around ten million colours, but colour discrimination ability varies considerably between people, declines with age, and is affected by screen quality and ambient lighting. Research using the Farnsworth-Munsell hue test has shown that colour discrimination ability can genuinely improve with regular practice, making this both a test and a training tool.
- â 100% free to play
- â No download or installation
- â No account or sign-up needed
- â Mobile and touch friendly
- â Works on all modern browsers