This technique relates to any technology that uses images that convey meaning. See New Low Vision SC to set baseline contrast for images & icons that convey information #3 Description New Low Vision SC needed similar to Success Criterion 1.4.3 (Contrast (Minimum). The objective of this technique is to help ensure that when an image is used to convey information or functionality even given a text-based alternative, it has sufficient contrast. People with low vision often have difficulty perceiving images that have insufficient contrast. This can be exacerbated if the person has a color vision deficiency that lowers the contrast even further. Providing a relative luminance (lightness) difference of 3:1 or greater can make the image more distinguishable when the person does not see a full range of colors and does not use assistive technology.
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