{"id":"1.4.3","name":"Contrast (Minimum)","level":"AA","principle":"Perceivable","operational_summary":"IF non-exempt text is ordinary sized, require at least 4.5:1; IF it is large-scale, require at least 3:1. Large-scale includes 18pt regular or 14pt bold, with equivalent-size language qualifications. Review incidental/inactive/logotype exceptions. Never round a failing ratio upward.","normative_source":"https://www.w3.org/TR/WCAG22/#contrast-minimum","understanding_source":"https://www.w3.org/WAI/WCAG22/Understanding/contrast-minimum.html","applicability_status":"NOT_EVALUATED","assessment_status":"NOT_TESTED","owner":null,"test_instance_ids":[],"exception_evidence_ids":[],"related_rules":[]}