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Color Blindness Test Leaderboard

Identify numbers in Ishihara-style plates. Screens for red-green and blue-yellow deficiencies.

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Site Record
12/12
Global Average
11/12
Total Scores
2,220,000

All-Time Rankings

Higher is better

plates
Rank Player Location Score
#1
T
trichromat_k GOLD
🇯🇵 Tokyo 12/12
#2
C
cone_ace SILVER
🇰🇷 Seoul 12/12
#3
R
rgb_master BRONZE
🇸🇬 Singapore 12/12
#4
C
cone_rich
🇫🇷 Marseille 12/12
#5
C
color_perfect
🇺🇸 New York 12/12
#6
C
color_ninja
🇨🇳 Guangzhou 12/12
#7
F
fullspec_v
🇨🇦 Montreal 12/12
#8
H
hue_king
🇩🇪 Hamburg 12/12
#9
T
trichrom_x
🇦🇺 Sydney 12/12
#10
I
ishihara_pro
🇬🇧 London 12/12

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Color Blindness Test - Score Guide & Analysis

What is a good Color Blindness Test score?

Level Score Range
Normal Vision 12/12
Mild Deficiency 10–11/12
Moderate 7–9/12
Significant < 7/12
🔬

Color vision deficiency affects L-cone (protanopia), M-cone (deuteranopia), or S-cone (tritanopia) function. Ishihara plates were developed in 1917 and remain the clinical standard. Complete color blindness (achromatopsia) is extremely rare (~1 in 33,000).

What does the Color Blindness Test test measure?

The Color Blindness test uses Ishihara-style pseudoisochromatic plates to screen for color vision deficiencies. Numbers or patterns are embedded in dots of varying hue and saturation. People with red-green deficiency (deuteranopia or protanopia, affecting ~8% of males) cannot distinguish the hidden number. This is a screening tool, not a clinical diagnosis.

How to improve your Color Blindness Test score

  • → Take the test with good ambient lighting - dim or colored light skews results.
  • → Don't squint or modify your screen colors (no Night Shift / blue light filters).
  • → For confirmed deficiency, EnChroma glasses and accessibility tools can improve daily function.
  • → Color blindness is X-linked recessive - it affects ~8% of males and ~0.5% of females.
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