Cloudflare Kumo UI

Identity

Developer Tools

Cloudflare's component system for modern web apps, with semantic light and dark tokens, compact typography, layered neutral surfaces, accessible controls, and chart-ready color guidance.

Typography

Ag
InterDisplay
Ag
InterBody
Ag
ui-monospaceMono
--text-4xl · 36pxThe quick brown fox
--text-3xl · 30pxThe quick brown fox
--text-2xl · 24pxThe quick brown fox
--text-xl · 20pxThe quick brown fox
--text-lg · 16pxThe quick brown fox
--text-base · 14pxThe quick brown fox
--text-sm · 13pxThe quick brown fox
--text-xs · 12pxThe quick brown fox

Palette

--bgoklch(98.75% 0 0)Page background — defines the brand canvas.
--surface#ffffffCard / lifted container background.
--surface-warmoklch(96% 0 0)Tertiary surface tier (kami warm-sand).
--fgoklch(21% 0.006 285.885)Primary text color.
--fg-2var(--fg)Secondary text tier (kami dark-warm).
--mutedoklch(55.6% 0 0)Subtext / captions.
--metavar(--muted)Tertiary FG / metadata tier (kami stone).
--borderoklch(14.5% 0 0 / 0.1)Default border / card edge.
--border-softoklch(93.5% 0 0)Inner row separator that should not visually compete.
--accentoklch(0.5772 0.2324 260)Brand accent. ≤2 visible uses per screen (lint enforced).
--accent-on#ffffffFG when --accent is the bg.
--successoklch(59.6% 0.145 163.225)Success state.
--warnoklch(73.9% 0.177 58.2)Warning state.
--dangeroklch(63.7% 0.237 25.331)Danger state.

Also named in DESIGN.md

Color#f6821ffor every primary control. Kumo distinguishes its orange brand text role from the blue semantic brand backgro…

Imagery & layout

Radius

--radius-sm4px
--radius-md6px
--radius-lg8px
--radius-pill9999px

Spacing

--space-1 · 4px
--space-2 · 8px
--space-3 · 12px
--space-4 · 16px
--space-5 · 20px
--space-6 · 24px
--space-8 · 32px
--space-12 · 48px

Elevation

--elev-raised

Component kit