University of Helsinki on social media | University of Helsinki

Research integrity | University of Helsinki

Research | University of Helsinki

Page not found (404) | University of Helsinki

University of Helsinki

First time visit: View without clicking anything

Think Corner | University of Helsinki

Doctoral school | University of Helsinki

News and press releases | University of Helsinki

About us | University of Helsinki

To comply with WCAG AA, the colour of text must sufficiently contrast with
its background color, so that people with moderate visual impairments can read it.

The [contrast ratio](https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html#contrast-ratiodef) 
must be at least 4.5:1 for body text, and 3:1 for large text.

A much more demanding version of this check (1.4.6) exists for WCAG AAA. Ignoring an issue in this check 
will also ignore it in that check, and vice versa.

aa-text-contrast

March 2026

February 2026

Title / URL	Issues
University of Helsinki on social media \| University of Helsinkiwww.helsinki.fi/en/news/university-social-media	67
Research integrity \| University of Helsinkiwww.helsinki.fi/en/research/research-integrity	16
Research \| University of Helsinkiwww.helsinki.fi/en/research	13
Page not found (404) \| University of Helsinkiwww.helsinki.fi/invented-url-for-404-page	12
University of Helsinkiwww.helsinki.fi/en	10
First time visit: View without clicking anythingwww.helsinki.fi/en	10
Think Corner \| University of Helsinkiwww.helsinki.fi/en/think-corner	10
Doctoral school \| University of Helsinkiwww.helsinki.fi/en/research/doctoral-school	9
News and press releases \| University of Helsinkiwww.helsinki.fi/en/news/news-and-press-releases	8
About us \| University of Helsinkiwww.helsinki.fi/en/about-us	8

Ensure text has sufficient contrast (AA)

University of Helsinki

Where this issue has occurred