We can improve the readability of our content in Vector by updating our colors used for links and visited links to ones that are more distinguishable (i.e. further apart) from the color we use for black text (`#222222`). The determination of how close/far apart two colors are can be made by measuring the [[ http://www.colorwiki.com/wiki/Delta_E%3a_The_Color_Difference | Delta E ]] value between the two colors, and the [[https://webaim.org/articles/contrast/ | contrast radio]] between the two colors. The table below suggests two colors that perform better than our current colors. These colors are also currently being used in Minerva (see T204081), and are part of the [[ https://design.wikimedia.org/style-guide/visual-style_colors.html | Wikimedia Style Guide ]], so there is a win for consistency as well.
| color | status | hex value | ∆E | contrast ratio
| link | current | `#0645ad` | 29.77 | 1.87
| link | proposed | `#3366cc` | **35.47** | **2.96**
| :visited link | current | `#0b0080` | 28.73 | 1.00
| :visited link | proposed | `#6b4ba1` | **31.14** | **2.38**
We update the link color to `#3366cc`
We update the :visited link color to `#6b4ba1`