SAGA Vision Test
Hue Discrimination & Gradient Sorting

Advanced Color Sensitivity Test

Rearrange the shuffled color blocks into a smooth gradient order. Test your perception of subtle hue variations!

Demo: Swap blocks to form a smooth gradient

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Vision Protection Blog

About Advanced Color Sensitivity Test

The Advanced Color Sensitivity Test (Color Hue Test) is based on the principles of the famous Farnsworth-Munsell 100 Hue Test. Unlike the basic version which only requires "finding the difference," the advanced version requires you to accurately identify gradient relationships between colors and sort them correctly.

In the test, you will see a row of color blocks where the first and last blocks are fixed, and the order of the middle blocks is shuffled. Your task is to swap the positions of the blocks to make the entire row present a smooth, continuous color gradient. This requires extremely high color discrimination and keen perception of hue.

The human retina contains three types of cone cells, sensitive to red, green, and blue light respectively. Through the coordinated work of these three types of cells, we can distinguish millions of colors. However, due to genetics, age, or eye diseases (such as macular degeneration), color discrimination ability may decline in some people. If you find the test difficult, it may mean your discrimination in certain hue ranges is weaker. In daily life, observing the rich colors in nature and maintaining good eye habits can help maintain the activity of the visual nerve.