Typefaces
IBM Plex Sans for everything you read, IBM Plex Mono for code, numbers in tables and eyebrows. The wordmark uses Inter Tight and nothing else does.
font-sans
Plex Sans Aa
font-mono
Plex Mono 0
Type scale
Large headings are light (300), which is what makes the system feel like Carbon. Small headings and emphasis use semibold (600). Avoid bold.
Display
60 / light · text-6xl font-light
Manage every lead
Heading 1
48 / light · text-5xl font-light
Manage every lead
Heading 2
30 / light · text-3xl font-light
Manage every lead
Heading 3
20 / semibold · text-xl font-semibold
Manage every lead
Body large
18 / regular · text-lg
Manage every lead
Body
16 / regular · text-base
Manage every lead
Body compact
14 / regular · text-sm
Manage every lead
Helper
12 / regular · text-xs text-neutral-500
Manage every lead