COLOR BLINDNESS

ISHIHARA VISUAL ACUITY

Difficulty Level
Session Stats
Score
0
Best
-
Level
-
Lives
-

Color Perception

Screen your red-green color contrast perception by identifying the numbers hidden within procedural dot plates.

Educational Screening Only: This test is for personal screening and does not replace a formal clinical examination by an eye care professional.

⚠️
Medical & Screening Notice: This online color vision test is designed strictly for educational demonstration and recreational screening. Digital computer monitors vary widely in color calibration, gamma curves, and brightness. This test does not constitute a medical diagnosis. If you suspect you have a color vision deficiency, consult a licensed optometrist or ophthalmologist for clinical Ishihara plate testing.

How It Works & Tips

Master the game with our comprehensive guide and improvement strategies.

About This Test

An interactive visual screening tool inspired by classic pseudoisochromatic Ishihara plates. Test your ability to perceive hidden numbers across varying red-green color contrasts.

What This Test Trains

Quickly test for common red-green color vision deficiencies.
Identify potential issues with color perception.
Engaging interactive format mimicking clinical Ishihara plates.
Challenge your visual acuity as the color differences become narrower.

Instructions & Mechanics

Quick Setup
1

Prepare

  • Disable blue-light filters.
  • Raise brightness.
  • Avoid tinted lenses.
2

Test

  • Pick difficulty.
  • Initialize.
  • Enter the number you see.
3

If Blank

  • Skip rather than random-guess if you want meaningful accuracy.
  • Retest on another calibrated display if surprised.
Key Rules:
✓Select your difficulty to begin.✓A large circle composed of smaller colored dots will appear.✓Look for a hidden number formed by differently colored dots.✓Use the on-screen keypad to enter the number you see.✓If you see nothing, click 'Skip'.

Expert Strategies

1Same Device Comparisons

Only compare sessions with matched display settings.

2Daylight Retest

Warm night themes distort hues.

3Accessibility Takeaway

If red-green is hard, prefer UI that is not color-only.

4See a Professional When Needed

Jobs and licenses may require clinic tests.

Frequently Asked Questions

Medical diagnosis?

No—educational screening only.

Deficiency type?

Mainly red-green patterns.

Phone vs laptop mismatch?

Different panels/color management.

Blue-light filter impact?

Yes—turn off for testing.

Mild deficiency still sees some plates?

Common on high-contrast plates.

Kids?

OK for learning; confirm clinically if concerned.

Can practice cure colorblindness?

No.

Designers rely on this alone?

No—use contrast tools and simulations too.

Worried about results?

Book a professional color vision exam.

Skip allowed?

Yes when no figure is visible.

Continue Your Training

Color Memory
Color Match