Stories | Biogen

Medicines | Biogen

Responsibility | Biogen

Lupus | Biogen

Environment | Biogen

First time visit: View without clicking anything

Biogen International | Biogen

Careers | Biogen

Disease Areas | Biogen

Biogen Foundation | Biogen

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

April 2025

March 2025

Biogen Inc.

Title / URL	Issues
Stories \| Biogenwww.biogen.com/stories.html	53
Medicines \| Biogenwww.biogen.com/medicines.html	47
Responsibility \| Biogenwww.biogen.com/responsibility.html	13
Lupus \| Biogenwww.biogen.com/disease-areas/lupus.html	13
Environment \| Biogenwww.biogen.com/responsibility/environment.html	11
First time visit: View without clicking anythingwww.biogen.com/	10
Biogen International \| Biogenwww.biogen.com/biogen-international.html	10
Careers \| Biogenwww.biogen.com/careers.html	9
Disease Areas \| Biogenwww.biogen.com/disease-areas.html	7
Biogen Foundation \| Biogenwww.biogen.com/company/biogen-foundation.html	6

Ensure text has sufficient contrast (AA)

Biogen Inc.

Where this issue has occurred