The header font is VictorMono by Rune B. Designed as a programming font, its italics have a beautiful pseudo-60’s retro look that I love.
The nav bar is set in Centaury by Justine Gagnaire. Part of her work for the fonderiz type foundry, this font is a revival of a typeface designed by H.W. Calson and Co. in the mid-19th Century.
All other text is set in Nightingale by Celia Yew, as part of her work for the Death of Typography type foundry. My favorite part of the font is its teardrop terminals on most punctuation marks. Yew says they “give the serifs a softer, more elegant feel.”
All three fonts are under the Open Font License.