v2.5.3

Design System

Bitrix24 UI's design system uses Tailwind CSS for simple theming and easy customization.
We are still updating this page. Some data may be missing here — we will complete it shortly.

Tailwind CSS

Tailwind CSS uses a CSS-first configuration, letting you define your design tokens with the @theme directive directly in your CSS. This makes your theme portable, maintainable and easy to customize.

app/assets/css/main.css
@import "tailwindcss";
@import "@bitrix24/b24ui-nuxt";

@theme {
  /* Your custom design tokens go here */
}
Check the Tailwind CSS documentation for all available theme variable customization options.

Breakpoints

Use the --breakpoint-* theme variables to customize your breakpoints.

app/assets/css/main.css
@import "tailwindcss";
@import "@bitrix24/b24ui-nuxt";

@theme {
  --breakpoint-3xl: 1920px;
  --breakpoint-4xl: 2560px;
  --breakpoint-5xl: 3840px;
}

Semantic colors

ColorPurpose
PrimaryHigh-emphasis elements and core states
air-primaryMain CTAs, active states, and primary branding
air-primary-successPositive outcomes, completed tasks, and success messages
air-primary-alertCritical errors, destructive actions, and high-priority alerts
air-primary-copilotDedicated accents for AI features and assistant interactions
air-primary-warningCautions, status delays, and items requiring attention
SecondaryMedium-emphasis and functional support
air-secondarySecondary actions, alternative buttons, and UI backgrounds
air-secondary-alertSubtle error states or non-critical destructive feedback
air-secondary-accentGeneral informational highlights and system notifications
air-secondary-accent-1Additional coding for categorization or data visualization
air-secondary-accent-2Secondary coding for visual grouping and variety
air-secondary-no-accentNeutral functional states without specific color meaning
Tertiary & UtilityLow-emphasis and specialized use cases
air-tertiary-accentSubtle interactive states and faint background highlights
air-tertiary-no-accentBorders, secondary text, and low-visibility dividers
air-selectionSelection states, focus indicators, and highlighted items
air-boostHigh-impact marketing highlights and attention-grabbing features