Free Color Blind Test With Instant Results
No sign-up required. This comprehensive 3–4 minute test screens for red-green and blue-yellow color blindness. Look at each Ishihara-style plate, enter the number you see, and get instant results that explain what your score means.
Before you begin
Set up your screen and lighting
Display conditions can materially change an online color vision result. Take a moment to check these items before starting.
- Use a color screen at its normal brightness, viewed straight on.
- Turn off Night Shift, blue-light filters, grayscale, and color filters.
- Use neutral room lighting and avoid glare on the display.
- Wear your usual prescription glasses or contacts, if applicable.
- Use your first impression and answer each plate within about 5 seconds.
Type-Specific Tests
Take a test designed for a specific type of color vision deficiency.
Red-Green Colorblind Test
Screens for protanopia, deuteranopia, protanomaly, and deuteranomaly.
Blue-Yellow Colorblind Test
Screens for tritanopia and tritanomaly using tritan-axis plates.
Protanopia Test (Red-Blind)
Screens for complete absence of red-sensitive L-cones.
Deuteranopia Test (Green-Blind)
Screens for complete absence of green-sensitive M-cones.
Tritanopia Test (Blue-Blind)
Blue-yellow plates for tritan-type deficiency.
Deuteranomaly Test (Green-Weak)
Screens for the most common color vision deficiency.
Protanomaly Test (Red-Weak)
Screens for shifted red-sensitive L-cones.
Tritanomaly Test (Blue-Weak)
Blue-yellow plates for blue-weak deficiency.
Achromatopsia Test
Combined red-green and blue-yellow screening.