Chromatic Classification	Score Range		Color Discrimination Category
	min	max
Normal Range.	1.00	1.25	Normal
Moderate color discrimination weakness.	1.25	1.67
Moderate color discrimination weakness.	1.27	1.65
Moderate color discrimination weakness. Possible tritan type anomaly.	1.19	1.68
Moderate color discrimination weakness. Possible red–green type anomaly.	1.39	1.62
Moderate to strong color discrimination anomaly. Tritan type anomaly.	1.69	2.05	Moderate deficit
Moderate to strong color discrimination anomaly. Deutan type anomaly.	1.76	1.76
Moderate to strong color discrimination anomaly. Red–green type anomaly.	1.72	1.72
Moderate to strong color discrimination anomaly. Non-specific anomaly.	1.71	2.21
Strong color discrimination anomaly. Non-specific anomaly.	2.29	2.49	Severe deficit
Strong color discrimination anomaly. Tritan type anomaly.	2.30	2.51
Strong color discrimination anomaly. Deutan type anomaly.	2.32	2.32
Strong color discrimination anomaly. Red–green type anomaly.	2.36	2.38
Severe color discrimination anomaly. Tritan type anomaly.	2.74	2.93
Severe color discrimination anomaly. Deutan type anomaly.	2.94	2.94
Severe color discrimination anomaly. Red–green type anomaly.	2.96	3.17
Severe color discrimination anomaly. Protan type anomaly.	3.50	3.50
Severe color discrimination anomaly. Extreme trichromat or monochromat.	2.81	3.64