docs/obsidian-developer/Reference/CSS variables/Foundations/Typography.md

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cssClass: reference

Font size

Obsidian uses both relative and fixed font sizes depending on the context.

• Use --font-* (relative) variables in the editor.
• Use --font-ui-* (fixed) variables for UI elements.

Variable	Default value	Description
--font-text-size	16px	Editor font size. Defined by the user under Appearance settings.
--font-smallest	0.8em
--font-smaller	0.875em
--font-small	0.933em
--font-ui-smaller	12px
--font-ui-small	13px
--font-ui-medium	15px
--font-ui-larger	20px

Font weight

Variable	Default value
--font-thin	100
--font-extralight	200
--font-light	300
--font-normal	400
--font-medium	500
--font-semibold	600
--font-bold	700
--font-extrabold	800
--font-black	900

Text formatting

Variable	Description
--bold-weight	Bold text font weight
--bold-color	Bold text color
--italic-color	Italic text color

Line heights

Variable	Default value	Description
--line-height-normal	1.5	Default line height
--line-height-tight	1.3	Used in search results, tree items, tooltips, and other smaller spaces