Other forms of perception are covered in Guideline 1.3 including programmatic access to color and other visual presentation coding. Understanding 1.4.1 Show Hide techniques and failures for 1.4.1 Sufficient Advisory Failures Sufficient Techniques for Success Criterion 1.4.1 Note: Other techniques may also be sufficient if they meet the success criterion. See Understanding Techniques. Situation A: If the color of particular words, backgrounds, or other content is used to indicate information: G14: Ensuring that information conveyed by color differences is also available in text G205: Including a text cue for colored form control labels G182: Ensuring that additional visual cues are available when text color differences are used to convey information G183: Using a contrast ratio of 3:1 with surrounding text and providing additional visual cues on hover for links or controls where color alone is used to identify them Situation B: If color is used within an image to convey information: G111: Using color and pattern G14: Ensuring that information conveyed by color differences is also available in text Advisory Techniques for Success Criterion 1.4.1 C15: Using CSS to change the presentation of a user interface component when it receives focus Failures for Success Criterion 1.4.1 F13: Failure of Success Criterion 1.1.1 and 1.4.1 due to having a text alternative that does not include information that is conveyed by color differences in the image F73: Failure of Success Criterion 1.4.1 due to creating links that are not visually evident without color vision F81: Failure of Success Criterion 1.4.1 due to identifying required or error fields using color differences only Back to top 1.4.2 Audio Control Level A If any audio on a Web page plays automatically for more than 3 seconds, either a mechanism is available to pause or stop the audio, or a mechanism is available to control audio volume independently from the overall system volume level. Understanding 1.4.2 Show Hide techniques and failures for 1.4.2 Sufficient Advisory Failures Sufficient Techniques for Success Criterion 1.4.2 Note: Other techniques may also be sufficient if they meet the success criterion.