Which color looks the most different?

In a series of tasks, we are going to show you triplets of colors. Your job is to decide which color looks the most different in each triplet.

Complete each task as accurately and quickly as possible.
We will start with a short training session to get you familiarized with the task interface. Click the button below to continue with the training session.

GREAT! You are done with training.
Now, take a moment and look at the colors above. How similar are they? What are the most similar and different pairs?
When you are ready, click the button below to start the study. Thanks for helping!

a b c

Which one looks the most different, a or b or c?

Your task is to select the color that looks the most different from the remaining two. You can make your selection by clicking on the color or by using the keyboard key. Complete each task as accurately and quickly as possible.

training session

a - select color a
b - select color b
c - select color c
enter or space bar - advance to next task

DONE! You have completed all the tasks. Now please tell us how you have compared the appearance of colors? Did you use any strategies? Enter these and any additional feedback in the box on the right.