Free online color blind test
A quick, private Ishihara-style screening you can take right in your browser. It runs on your device, gives an instant result, and never uploads anything.
Important: this is a screening tool, not a medical diagnosis. For a clinical assessment, see an eye-care professional.
What the test checks
Red-green deficiencies (deuteranomaly and protanomaly) are the most common. The plates are designed so numbers stand out - or disappear - depending on how you perceive color.
After the test
Satura can also simulate what different types of color vision look like, and apply filters that make confusable colors easier to tell apart.