Washington University has designated two fonts for the use on the web. Those fonts are Source Sans Pro (Sans Serif) and Libre Baskerville (Serif).

Source Sans Pro

This is an example of Source Sans Pro text.

A free Google font, Source Sans Pro, is a clean and modern sans serif font. It has 12 different styles:

Extra-Light
Extra-light Italic
Light
Light Italic
Regular
Regular Italic
Semi-Bold
Semi-Bold Italic
Bold
Bold Italic
Black
Black Italic

Code

HTML

<link href="https://fonts.googleapis.com/css?family=Source+Sans+Pro" rel="stylesheet">

CSS

font-family: 'Source Sans Pro', sans-serif;

Libre Baskerville

This is an example of Libre Baskerville text.

Libre Baskerville is also a free Google font. It has 3 different styles:

Regular
Regular Italic
Bold

Code

HTML

<link href="https://fonts.googleapis.com/css?family=Libre+Baskerville" rel="stylesheet">

CSS

font-family: 'Libre Baskerville', serif;

Font Sizes and Styles

H1 - Source Sans Pro - 64px

H2 - Source Sans Pro - 48px

H3 - Source Sans Pro - 32px

H4 - Source Sans Pro - 24px

H5 - Source Sans Pro - 18px

H6 - Source Sans Pro - 14px

H1 - Libre Baskerville - 64px

H2 - Libre Baskerville - 48px

H3 - Libre Baskerville - 32px

H4 - Libre Baskerville - 24px

H5 - Libre Baskerville - 18px

H6 - Libre Baskerville - 14px