Online Color Blindness Test – Authoritative, Free, No Registration
This tool is based on the international standard of Ishihara Color Blindness Test Plates, featuring 10 high-resolution test plates covering red-green color blindness, blue-yellow color blindness, total color blindness, and color weakness. Users do not need to install any software or register an account; simply open the browser to complete the entire color blindness test online, obtaining results in 3 minutes. It is an ideal choice for personal self-check, pre-employment physical exams, and pre-tests for driving schools/college entrance exams/military enlistment.
Authoritative Standard
Uses classic test plates by Dr. Shinobu Ishihara, widely recognized by global medical institutions.
Completely Free
Unlimited attempts, no device restrictions, no ads, no hidden fees.
Instant Report
Generates a color blindness type and degree grading report immediately after answering 10 questions.
Core Features Overview
- 10 selected plates: Include number plates, curved line plates, dot matrix plates, covering protanopia (red blindness), deuteranopia (green blindness), tritanopia (blue blindness) and corresponding color weakness (anomaly).
- Intelligent scoring: Automatically categorizes as "normal / mild color weakness / moderate color blindness / severe color blindness" based on the number of incorrect answers.
- Progress memory: Browser local storage saves answer progress; refreshing the page allows continuation of the test.
- One-click reset: Click "Restart" anytime to clear history, convenient for retesting.
- Multi-device adaptation: Responsive design, perfectly displayed on mobile, tablet, and computer.
Common Usage Scenarios
Employment / School Admission Physical Exams
Self-screening before physical exams for civil servants, public institutions, railways, aviation, military/police, driving schools, and college entrance exams.
Special Occupation Screening
Pre-testing for positions with color vision requirements in industries such as design, electrical work, chemical engineering, and transportation.
Daily Health Self-Check
Quick online verification anytime you suspect color weakness or color blindness in yourself or your child.
Teaching Aid
Demonstrating color vision differences in biology, medical, and art courses for primary, secondary, and higher education.
High-Score Tips and Precautions
- Environment lighting: Choose natural light or soft indoor light, avoid direct strong light on the screen.
- Screen settings: Brightness 50-70%, default contrast, do not enable eye protection mode or blue light filter.
- Vision correction: Those with myopia, astigmatism, or presbyopia should wear corrective glasses before testing.
- Answering pace: Control within 5-10 seconds per question, fill based on first intuition, avoid overthinking.
- Device recommendation: Prioritize using phones above 5.5 inches or full-screen computers; overly small screens may cause misjudgment.
- Retesting principle: If initial results are abnormal, recommend retesting 2-3 times with 24-hour intervals and in different environments to improve accuracy.