Theming

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.

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.

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>

List of variables

Here's the list of variables available for customization:

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

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

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

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

	--border: 214.3 31.8% 91.4%;

	--input: 214.3 31.8% 91.4%;

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

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

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

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

	--ring: 215 20.2% 65.1%;

	--radius: 0.5rem;

Adding new colors

To add new colors, you need to add them to your CSS file and to your tailwind.config.js file.

	:root {
  --warning: 38 92% 50%;
  --warning-foreground: 48 96% 89%;
}
 
.dark {
  --warning: 48 96% 89%;
  --warning-foreground: 38 92% 50%;
}

	export default {
  theme: {
    extend: {
      colors: {
        warning: "hsl(var(--warning))",
        "warning-foreground": "hsl(var(--warning-foreground))",
      },
    },
  },
};

You can now use the warning utility class in your components.

	<div class="bg-warning text-warning-foreground"></div>

Other color formats

It's recommended to use HSL colors for theming but you can also use other color formats if you prefer.

See the Tailwind CSS documentation for more information on using rgb, rgba or hsl colors.