Itqualityassurance
- What is contrast ratio of 4.5 1?
- What is an acceptable contrast ratio?
- In which instance must text meet the contrast requirement of 4.5 1 for SC 1.4 3 contrast minimum )?
- What is a good color contrast score?
What is contrast ratio of 4.5 1?
Technique G18:Ensuring that a contrast ratio of at least 4.5:1 exists between text (and images of text) and background behind the text. This technique is Sufficient to meet 1.4. 3: Contrast (Minimum) and Sufficient to meet 1.4. 6: Contrast (Enhanced) .
What is an acceptable contrast ratio?
Color Contrast Ratios Guidance
Whenever using color in images, ensure that the colors have a contrast ratio of at least 4.5:1. This ensures that the text is still readable to those who may have color blindness.
In which instance must text meet the contrast requirement of 4.5 1 for SC 1.4 3 contrast minimum )?
The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following: Large Text. Large-scale text and images of large-scale text have a contrast ratio of at least 3:1; Incidental.
What is a good color contrast score?
Regarding colors, the standard defines two levels of contrast ratio: AA (minimum contrast) and AAA (enhanced contrast). The level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (at least 18pt) or bold text.
