In both examples, the color could be used without failure if the text was sufficiently different in visual presentation (e.g. bold or in a different font) that it would be easily differentiated from the surrounding text if the color were removed. It would also not fail if the color chosen had sufficient luminosity difference (lightness) from the other text that it would be easily be seen as different if viewed in black and white. In these cases - the information would not be displayed in color (hue) alone but also in "presentation" or "lightness" respectively.
+In both examples, the color could be used without failure if the text was sufficiently different in visual presentation (e.g. bold or in a different font) that it would be easily differentiated from the surrounding text if the color were removed. It would also not fail if the color chosen had sufficient luminosity difference (lightness) from the other text that it would be easily be seen as different if viewed in black and white. Like technique G183: Using a contrast ratio of 3:1 with surrounding text and providing additional visual cues on focus for links or controls where color alone is used to identify them, a sufficient luminosity difference would be a contrast ratio of 3:1. In these cases - the information would not be displayed in color (hue) alone but also in "presentation" or "lightness" respectively.