[a11y] 11.1.4.3 Contrast (minimum)

[tschiebel]

audit: https://infinite.owncloud.com/s/qSvYucPltEYUhhc

https://github.com/BIK-BITV/BIK-App-Test/tree/main/Pr%C3%BCfschritte/de
https://www.etsi.org/deliver/etsi_en/301500_301599/301549/03.02.01_60/en_301549v030201p.pdf

Note 1: For texts (also in the focused state) under 18 points (or
bold text below 14 point), the contrast ratio between foreground and background color should be at least
background color should be at least 4.5:1. For large fonts, the contrast ratio should be
should be 3:1 or greater.
Note 2: Since the contrast measurements in the test were carried out using screenshots
the test results may differ from the actual color values. It is
possible that the colors are displayed differently on the screenshot than on the
screen of the device. For this reason, the test results should be regarded as guide values.
should be regarded as guidelines.

Personal Space

• Both the size information and the time information on the page do not meet the contrast
  do not meet the contrast requirements for texts, as the contrast ratio is currently
  is currently well below 4.5:1.
  The text at the bottom of the page, which shows the number of directories and
  files also does not meet the contrast requirements for text.
  

• The button labels (see screenshot) do not meet the contrast requirements for text.
  contrast requirements for text.
  

Menu

• The URL of the user account does not meet the contrast requirements for texts.
  

• When focusing on active buttons in the menu, such as
  "Personal", the color of the text changes in such a way that the contrast
  contrast requirements for texts are no longer met.
  

Shared with me

• The size specifications as well as the time specifications and texts such as "Shared
  by ..." on the page do not meet the contrast requirements for texts, as the current contrast
  current contrast ratio is well below 4.5:1.

• The labels of the "Accept" and "Reject" buttons do not meet the contrast requirements for texts.
  do not meet the contrast requirements for texts.
  

Shared with others

• All texts that begin with "Shared by ..." do not fulfill the contrast requirements
  for texts, as the current contrast ratio is well below the value of 4.5:1.
  

Spaces

• Depending on which background image is used for Space buttons,
  it could be that the contrast requirements for the labels are not met.
  are not met. It is therefore best to place the labels below or above the images.
  above the images.

Add Account

• The labels of the "Cancel" and "Continue" buttons do not meet the contrast requirements for texts.
  contrast requirements for texts.