A comprehensive online color vision test using 38 Ishihara plates. Check for color vision deficiencies including red-green color blindness (Protanopia/Deuteranopia) and general color vision problems.
The question "Am I color blind?" often arises when people notice subtle discrepancies in how they perceive the world compared to others. We developed this 38-plate Ishihara test because many online versions are too brief to be reliable. While a 10-plate screening might catch severe cases, the full 38-plate sequence is the gold standard for identifying specific nuances between Protanopia (red-blind) and Deuteranopia (green-blind) deficiencies.
This Ishihara color vision test uses pseudoisochromatic plates—patterns of colored dots that hide numbers or paths only visible to those with specific color-perceiving cones. By working through the complete set, from introductory demonstration plates to the complex "hidden digit" and "diagnostic" plates, you can get a clearer picture of your color perception. This level of detail is crucial for students, professionals in design or engineering, and anyone whose work depends on accurate color identification.
We designed this tool to be accessible and thorough, providing a structured environment to test your vision without the distractions of low-quality, abbreviated tests. By categorizing your results, the test doesn't just tell you if there is an issue—it helps you understand the specific nature of your red-green color deficiency, providing better context for when you consult with an eye care professional.
Testing Environment Tip: For the most accurate results, view the Ishihara plates in natural daylight conditions and turn off any "Blue Light" filters or "Night Shift" modes on your device. These software settings intentionally shift color temperatures, which can cause false positives even for those with perfect 20/20 color vision.
The Ishihara test is the most common color vision deficiency test that uses colored plates with embedded numbers or lines to detect red-green color blindness and other color vision problems.
While this test follows standard Ishihara plate patterns, it should not replace a professional eye exam. It can reliably screen for common color vision deficiencies but may have limitations due to screen settings and lighting conditions.
The Ishihara test is designed to detect red-green color blindness (Protanopia and Deuteranopia) and general color vision deficiencies. Specific plates help differentiate between red-blind (Protanopia) and green-blind (Deuteranopia) conditions.
For best results, complete all Ishihara test 38 plates. The test becomes more accurate with more responses, especially plates 22-25 which specifically differentiate between types of red-green color blindness.
Number plates test basic color perception, while line-tracing plates test more subtle deficiencies. Some plates appear blank to color-blind individuals while showing patterns to those with normal vision.
Yes, but young children may need assistance understanding the instructions. The number recognition plates require basic number knowledge - consider using the line-tracing plates for younger children.