You can insert special characters into a web page by typing an ampersand, a number or letter sequence, and a semicolon.
These are the codes for rendering diacritical marks in Hawaiian words:
Other frequently used codes:
A Note on Accessibility: The ʻokina is known to throw off screen reading programs that read out text for blind people. To address this, University of Hawaiʻi Office of Communications recommends using the aria-label attribute within a span tag to supply the word (without diacrical marks) to the screen reader.
<span aria-label="Hawaii">Hawaiʻi</span>