Theming - shadcn-svelte

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Theming

Use CSS Variables to customize the look and feel of your application.

We use CSS variables for styling. This allows you to easily change the colors of components without having to update class names.

CSS variables must be defined without the color space function. See the Tailwind CSS documentation for more information.

Hex -> Color Channel

You can use this tool to convert your HEX color to HSL without the color space function. Simply add your color in hex format, copy one of the generated values, then add them to the CSS variable.

HEX

HSL

RGB

Convention

We use a simple background and foreground convention for colors. The background variable is used for the background color of the component and the foreground variable is used for the text color.

The background suffix can be omitted if the variable is used for the background color of the component.

Given the following CSS variables:

	--primary: 222.2 47.4% 11.2%;
--primary-foreground: 210 40% 98%;

The background color of the following component will be hsl(var(--primary) / <alpha-value>) and the foreground color will be hsl(var(--primary-foreground) / <alpha-value>).

	<div class="bg-primary text-primary-foreground">Hello</div>

CSS Variables

Here's the list of variables available for customization:

Default background color of <body />...etc

	--background: 0 0% 100%;
--foreground: 222.2 47.4% 11.2%;

Muted backgrounds such as <TabsList />, <Skeleton /> and <Switch />

	--muted: 210 40% 96.1%;
--muted-foreground: 215.4 16.3% 46.9%;

Background color for <Card />

	--card: 0 0% 100%;
--card-foreground: 222.2 47.4% 11.2%;

Background color for popovers such as <DropdownMenu />, <HoverCard />, <Popover />

	--popover: 0 0% 100%;
--popover-foreground: 222.2 47.4% 11.2%;

Default border color

	--border: 214.3 31.8% 91.4%;

Border color for inputs such as <Input />, <Select />, <Textarea />

	--input: 214.3 31.8% 91.4%;

Primary colors for <Button />

	--primary: 222.2 47.4% 11.2%;
--primary-foreground: 210 40% 98%;

Secondary colors for <Button />

	--secondary: 210 40% 96.1%;
--secondary-foreground: 222.2 47.4% 11.2%;

Used for accents such as hover effects on <DropdownMenuItem>, <SelectItem>...etc

	--accent: 210 40% 96.1%;
--accent-foreground: 222.2 47.4% 11.2%;

Used for destructive actions such as <Button variant='destructive'>

	--destructive: 0 100% 50%;
--destructive-foreground: 210 40% 98%;

Used for focus ring

	--ring: 215 20.2% 65.1%;

Border radius for card, input and buttons

	--radius: 0.5rem;

Default

The following is the default color palette used by the components.

src/app.pcss

	@tailwind base;
@tailwind components;
@tailwind utilities;
 
@layer base {
  :root {
    --background: 0 0% 100%;
    --foreground: 240 10% 3.9%;
 
    --muted: 240 4.8% 95.9%;
    --muted-foreground: 240 3.8% 46.1%;
 
    --popover: 0 0% 100%;
    --popover-foreground: 240 10% 3.9%;
 
    --card: 0 0% 100%;
    --card-foreground: 240 10% 3.9%;
 
    --border: 240 5.9% 90%;
    --input: 240 5.9% 90%;
 
    --primary: 240 5.9% 10%;
    --primary-foreground: 0 0% 98%;
 
    --secondary: 240 4.8% 95.9%;
    --secondary-foreground: 240 5.9% 10%;
 
    --accent: 240 4.8% 95.9%;
    --accent-foreground: 240 5.9% 10%;
 
    --destructive: 0 84.2% 60.2%;
    --destructive-foreground: 0 0% 98%;
 
    --ring: 240 5% 64.9%;
 
    --radius: 0.5rem;
  }
 
  .dark {
    --background: 240 10% 3.9%;
    --foreground: 0 0% 98%;
 
    --muted: 240 3.7% 15.9%;
    --muted-foreground: 240 5% 64.9%;
 
    --popover: 240 10% 3.9%;
    --popover-foreground: 0 0% 98%;
 
    --card: 240 10% 3.9%;
    --card-foreground: 0 0% 98%;
 
    --border: 240 3.7% 15.9%;
    --input: 240 3.7% 15.9%;
 
    --primary: 0 0% 98%;
    --primary-foreground: 240 5.9% 10%;
 
    --secondary: 240 3.7% 15.9%;
    --secondary-foreground: 0 0% 98%;
 
    --accent: 240 3.7% 15.9%;
    --accent-foreground: 0 0% 98%;
 
    --destructive: 0 62.8% 30.6%;
    --destructive-foreground: 0 85.7% 97.3%;
 
    --ring: 240 3.7% 15.9%;
  }
}
 
@layer base {
  * {
    @apply border-border;
  }
  body {
    @apply bg-background text-foreground;
    font-feature-settings:
      "rlig" 1,
      "calt" 1;
  }
}

components.json Dark mode

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