Radix Blue

Radix UI's blue scale — 12 semantically labeled steps published in both light and dark variants. A clean, slightly cool blue — Radix's default action color. Step 1 is app background, step 9 is the solid brand color, step 12 is high-contrast text. The same step number means the same semantic role across light and dark, with different hex values per mode.

28 swatches 14 light roles 14 dark roles radixcooldesign-systemscaledual-mode

Swatches

blue-1-light
#FBFDFF
App background.
blue-2-light
#F4FAFF
Subtle background.
blue-3-light
#E6F4FE
UI element background.
blue-4-light
#D5EFFF
Hovered UI element background.
blue-5-light
#C2E5FF
Active / selected UI element background.
blue-6-light
#ACD8FC
Subtle borders and separators.
blue-7-light
#8EC8F6
UI element border and focus rings.
blue-8-light
#5EB1EF
Hovered UI element border.
blue-9-light
#0090FF
Solid background — the brand color step.
blue-10-light
#0588F0
Hovered solid background.
blue-11-light
#0D74CE
Low-contrast text.
blue-12-light
#113264
High-contrast text.
blue-1-dark
#0D1520
App background.
blue-2-dark
#111927
Subtle background.
blue-3-dark
#0D2847
UI element background.
blue-4-dark
#003362
Hovered UI element background.
blue-5-dark
#004074
Active / selected UI element background.
blue-6-dark
#104D87
Subtle borders and separators.
blue-7-dark
#205D9E
UI element border and focus rings.
blue-8-dark
#2870BD
Hovered UI element border.
blue-9-dark
#0090FF
Solid background — the brand color step.
blue-10-dark
#3B9EFF
Hovered solid background.
blue-11-dark
#70B8FF
Low-contrast text.
blue-12-dark
#C2E6FF
High-contrast text.
slate-11-light
#60646C
Neutral text imported from Radix Slate for legibility on the chromatic scale's mid-tone backgrounds. Step 11 is low-contrast text.
slate-12-light
#1C2024
Neutral text imported from Radix Slate for legibility on the chromatic scale's mid-tone backgrounds. Step 12 is high-contrast text.
slate-11-dark
#B0B4BA
Neutral text imported from Radix Slate for legibility on the chromatic scale's mid-tone backgrounds. Step 11 is low-contrast text.
slate-12-dark
#EDEEF0
Neutral text imported from Radix Slate for legibility on the chromatic scale's mid-tone backgrounds. Step 12 is high-contrast text.

Mode role mappings

Light mode (14 roles)

accent → blue-8-light
accent-hover → blue-7-light
background → blue-1-light
error → blue-12-light
primary → blue-9-light
primary-hover → blue-10-light
success → blue-9-light
surface → blue-2-light
surface-elevated → blue-3-light
text-primary → slate-12-light
text-secondary → slate-11-light
text-tertiary → blue-9-light
warning → blue-9-light
warning-hover → blue-10-light

Dark mode (14 roles)

accent → blue-8-dark
accent-hover → blue-7-dark
background → blue-1-dark
error → blue-12-dark
primary → blue-9-dark
primary-hover → blue-10-dark
success → blue-9-dark
surface → blue-2-dark
surface-elevated → blue-3-dark
text-primary → slate-12-dark
text-secondary → slate-11-dark
text-tertiary → blue-9-dark
warning → blue-9-dark
warning-hover → blue-10-dark

Provenance

Source
https://www.radix-ui.com/colors/docs/palette-composition/scales
License
MIT
Attribution
Radix Colors, Copyright WorkOS, Inc., MIT licensed. Imported from the radix-ui/colors repository on GitHub.
Imported
2026-05-17 (upstream version 3.0.0)
Notes
Radix publishes distinct hex values for each scale in light and dark mode. This atom carries both as -light and -dark suffixed swatches; modes.light.roles points at -light swatches and modes.dark.roles at -dark swatches. Blue is a chromatic hue and makes a poor neutral for body text, so steps 11 and 12 of Radix Slate are imported as supplementary swatches and used for text-primary and text-secondary in both modes.