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The website ColorBlindnessTest.org offers a free, quick online color blindness test, primarily using Ishihara plates. This test helps detect color vision deficiencies, including red-green, blue-yellow, and total color blindness. Users identify numbers or shapes within a series of colored dot patterns. It serves as a screening tool, and professional evaluation is recommended for a comprehensive diagnosis. Additional tests and tools are available, such as the Farnsworth-Munsell 100 Hue Test and color personality assessments
For more details, visit: color blind test