Color Vision Screening (Educational)

Color vision differences are common, especially red-green deficiencies that can be inherited. This tool uses original educational color-discrimination exercises — not copyrighted Ishihara plates — so you can learn how screening-style tasks work.

Browser displays are not color-calibrated clinical instruments. Ambient light, night mode, and OS color filters can shift hues. Use this tool to learn concepts, not to label yourself clinically or diagnose color-vision deficiency.

Follow these educational steps:

1. Disable unusual color filters if you want a more typical display appearance.
2. View in neutral room lighting without strong tinted bulbs if possible.
3. Follow each plate or comparison and select what you see without rushing.
4. Note whether difficulty is new versus lifelong — that distinction matters clinically.
5. Review the educational explanation of what screening can and cannot show.

Missing figures that others see can occur with congenital color vision deficiency or with display limitations. Acquired color changes can relate to optic nerve or macular disease and deserve professional attention, especially if new.

Occupational color requirements are evaluated with standardized clinical or occupational tests, not website quizzes.

This tool does not diagnose protan, deutan, or tritan deficiencies with clinical certainty.

It cannot clear someone for aviation, electrical, or other color-critical jobs.

Important limitations:

• These are original educational exercises, not Ishihara (or other proprietary) pseudoisochromatic plates.
• sRGB screens vary; OLED and LCD differ; uncalibrated displays are not diagnostic instruments.
• Colorblind-friendly OS filters, blue-light modes, and ambient lighting alter results.
• Online color tasks cannot replace clinical color-vision testing.

Originality & display note: Scores and comparisons here are educational only. Display calibration limits mean results are not a clinical color-vision diagnosis.

Seek care for new color desaturation, especially with vision loss, pain with eye movement, or neurological symptoms. Lifelong stable differences can still be documented formally when needed for school or work.