On a webpage, password fields obscure your input with star's to mask them from shoulder surfers. At times, even the users are not sure if they have typed the password correctly. Chroma-Hash is an experiment that displays a variety of visualization like background gradients or background. After sometime your would recognize the gradient that should appear for your passwor, and when the wrong gradient appears, you know that you mis-typed the password.
Chroma-Hash takes an MD5 hash of your input and uses that to compute the visualization.
The MD5 hash is non-reversible, so no one could know what your password just from the colors.
Here is a demo video of how ChromaHash works