The contrast ratio between text and its background is not at least 4.5:1.
Element: 'x hours ago' text information
Location: Homepage-> Select Search from Left Navigation-> Select 'Switch to Queue view' select a document, it opens in Main region of the page under 'Activity' tab.
Ex: '6 hours ago' text in the page doesn't have min luminosity ratio as follows:
Foreground/Text color: #B3B3B1
Background color: #FFFFFF
Recommendation to fix
Small text (under 18 point regular font or 14 point bold font) MUST have a contrast ratio of at least 4.5 to 1 with the background.
HOW TO FIX:
Fix this issue by adjusting the text and/or background to increase the contrast to at least 4.5 to 1.
Deque University: https://dequeuniversity.com/class/visual-design2/contrast/text-against-background
People who have low vision or are colorblind may have difficulty reading text if the contrast between the text its background is insufficient. When the contrast ratio between text and its background is adequate, people who have low vision or are colorblind are more likely to be able to read the text.