Can you see the number in this circle?
Take the 17-Plate Color Blind Test
Choose the number you see on each Ishihara-style plate. The test takes about two minutes and screens for possible red-green color vision differences.
A Clear First Look at Your Color Vision
A simple screening flow with transparent limits and practical next steps
- Instant ResultsSee your screening score and a plain-language explanation as soon as you finish
- Privacy FocusedNo signup is required. Completion creates an unlisted result link; anyone with that link can view it
- Mobile OptimizedUse the test on a phone, tablet, or desktop with a color display
Why Color Blind Testing is Important
A screening result can identify when a professional color vision assessment may be useful
What This Online Test Can - and Cannot - Tell You
Use the result as an initial screen, then choose the right next step for your situation
Ishihara Test
These Ishihara-style number plates are designed to screen for common red-green color vision differences
Protan and Deutan Patterns
Your answers may suggest a red-type (protan) or green-type (deutan) tendency, but do not establish a diagnosis
Children's Color Blind Test
Children who know their digits can use the shorter parent-guided version; younger children need an age-appropriate clinical test
Professional Confirmation
A clinician can repeat testing under controlled lighting and use tools such as HRR plates, D-15, or an anomaloscope
Screen and Lighting Limits
Night mode, color filters, glare, low brightness, and uncalibrated displays can change an online result
Not a Medical or Job Certificate
Do not use an online score alone for medical decisions, driving eligibility, or occupational clearance
Frequently Asked Questions
Quick answers to common questions about our color blind test
How This Online Ishihara Color Blind Test Works
Learn what the plates screen for, how to prepare your display, and when to seek a professional assessment
View 17 Ishihara plates and enter the number you see, or choose "Nothing". Some plates are designed to appear blank — for normal vision on a few, and for red-green differences on others.
Your answer patterns indicate typical color vision or possible red-green differences. Results are educational screening only, not medical diagnoses.
Online color blind test results depend on proper lighting, screen calibration, and viewing distance. For professional diagnosis, consult an eye care specialist.
This Ishihara test screens for the most common red-green deficiencies. Also see the focused Red-Green Test, the Kids Test, and our tritan (blue-yellow) guide.
Scientific References
Academic sources supporting color blind test methodologies
Shinobu Ishihara. Tests for Colour-blindness, 38-plate edition, 2004.
The foundational work establishing Ishihara color blind test standards used worldwide for red-green color vision screening.
Farnsworth D. The Farnsworth-Munsell 100-Hue Test for examination of color discrimination, 1957.
Comprehensive color blind test methodology for detailed color vision assessment and professional screening applications.
Hardy LH, Rand G, Rittler MC. HRR Pseudoisochromatic Plates, 4th Edition, 2002.
Advanced color blind test plates for clinical color vision testing with enhanced sensitivity for color deficiency detection.
Cole BL. Assessment of inherited color vision defects in clinical practice. Clinical and Experimental Optometry, 2007.
Modern guidelines for color blind test administration and interpretation in professional color vision assessment.
Ready to Check Your Color Vision?
Complete the free 17-plate screening in about two minutes and review your result immediately