🎨

Color Blindness Test

Take a quick Ishihara-style color blindness test on screen using hidden-number dot plates. Get a rough color vision screening summary, answer pattern signals, and practical next steps for follow-up.

🎨

Color Blindness Test

Take a quick on-screen color blindness test using Ishihara-style number plates to screen for possible color discrimination differences. For other eye checks, compare it with the Visual Acuity Test or the Eye Strain Calculator.

⚠️This is a screen-based color vision screening tool, not a diagnosis. Device color balance, night mode, brightness, and glare can all change the result.
0 of 6 plates answered0% complete

How to use the test

Look at each plate and choose the number you can see most clearly. If you cannot make out a number, choose “No number”.

Neutral display

Turn off night mode, color filters, and strong blue-light reduction before testing.

Even lighting

Avoid harsh glare or dim rooms so color contrast is easier to judge.

One device first

Finish the test on one screen, then compare with another screen only afterward.

What this tool highlights

Ishihara-style screening

The plates use dot patterns and hidden numbers to mimic a basic color discrimination screen.

Pattern-based summary

The result separates general misses from rough red-green or blue-yellow plate patterns.

Screening only

A mixed or weak score can suggest follow-up, but it does not diagnose the type or severity of deficiency.

Plate 1

Plate 1: choose the number you can see most clearly.

General plate
Plate 2

Plate 2: choose the number you can see most clearly.

Red-green weighted
Plate 3

Plate 3: choose the number you can see most clearly.

Red-green weighted
Plate 4

Plate 4: choose the number you can see most clearly.

General plate
Plate 5

Plate 5: choose the number you can see most clearly.

Blue-yellow weighted
Plate 6

Plate 6: choose the number you can see most clearly.

Blue-yellow weighted

What Is a Color Blindness Test?

A color blindness test screens how well you can distinguish certain color groupings, especially the red-green combinations that are commonly used in Ishihara-style plates. In those plates, a number is hidden inside many colored dots. If color contrast is harder to distinguish, the number may appear faint, different, or invisible.

This tool gives you a rough on-screen color vision screen, not a diagnosis. If you also want general eye-screening tools, browse the Eye Check & Assessment category.

How This Color Blindness Test Works

The test shows several Ishihara-style dot plates. Each plate hides a number inside a colored dot pattern. You choose the number you can see, and the tool compares your answers with the expected plate answers to build a simple screening summary.

1
View each plate on one screen

Keep the same device, brightness, and color settings while you move through the plate set.

2
Choose the clearest number

Pick what you actually see instead of guessing what might be there.

3
Compare the answer pattern

The tool checks your responses across general, red-green weighted, and blue-yellow weighted plates.

4
Read the screening summary

The output highlights whether the quick screen looked stable, mixed, or worth following up with a more formal assessment.

Example: A Mixed Plate Result

Example: if you answer most general plates correctly but miss multiple red-green weighted plates, the tool may describe that as a mixed result with a rough red-green signal. That does not prove a specific deficiency type, but it can suggest that a more formal test would be useful.

If you want to compare chart reading rather than color discrimination, use the Eye Chart Simulator (Snellen) or the Visual Acuity Test.

Why Screen-Based Color Tests Can Be Unreliable

📱
Different screen gamuts

Phones, tablets, and monitors do not show the same hues or saturation levels.

🌙
Night mode and filters

Blue-light reduction and accessibility color filters can change the plate contrast a lot.

💡
Room glare

Reflections and bright ambient light can wash out dot differences that matter.

🎛️
Display calibration

Even two similar screens can render red, green, and yellow ranges differently.

😴
Fatigue

Eye strain and tiredness can make subtle dot differences harder to pick out.

🩺
Clinical limits

A real color vision assessment uses standardized materials and interpretation, not only on-screen plates.

When To Get a Formal Color Vision Assessment

Color mistakes are affecting work, study, wiring, design, or signal recognition
You have noticed a recent change rather than a long-standing color perception pattern
You need a reliable answer for licensing, school, work, or occupational screening
Results keep changing across devices or remain mixed even under better testing conditions
You want an actual diagnosis or subtype classification rather than a rough screen

Related Tools

Frequently Asked Questions

Is this the same as a clinical Ishihara test?

No. It is Ishihara-style and intended for rough screening only. Clinical materials are standardized more carefully.

Can this diagnose red-green color blindness?

No. It can only suggest that your answer pattern may be worth following up with a formal test.

Why do different screens change the result?

Because hue, brightness, saturation, white balance, and contrast vary significantly from one display to another.

Should I use dark mode or night mode while testing?

No. Turn those off first, because they can shift the colors and make the plate easier or harder unfairly.

What if I cannot see any number on a plate?

Choose “No number”. That is better than guessing, and it produces a more meaningful screening pattern.

Explore This Tool in Context

Color Blindness Test is part of the Eye Check & Assessment collection. If you want a broader view of similar workflows, open the Eye Check & Assessment category page or browse all QuickTools categories.

Common next steps after this tool include Visual Acuity Test, Eye Chart Simulator (Snellen) and Astigmatism Test.

More in Eye Check & Assessment

View category hub →