Svelte Theme

The theme module easily provides ability to make light and dark theme.

Installation

yarn add svelte-theme

Usage

1. Wrap your App with ThemeProvider.

import {ThemeProvider} from 'svelte-theme';

2. Retrieve the theme with Svelte Context API

const {theme} = getContext<ThemeStore>('svelte-theme');

Note that generic type ThemeStore help you see theme props with autocomplete when using typescript.

Usage in css style

The theme props will be converted to kebab-case in global css variables. For mainDark prop, it will be converted to --main-dark css variable. Thereofre inside style tag, you can you it like below.

<style>
  p {
    color: var(--main-dark);
  }
</style>

If you want to add opacity to theme color, you should use color-rgb instead of color.

<style>
  p {
    color: rgba(var(--main-dark), 0.2);
  }
</style>

Note that rgb value is calculated based on hex string, such as #000 or #0DB293.

Customizing theme

1. Define colors for light and dark theme.

export const colors = {
  primary: '#0DB293',
  primaryLight: '#75D0B8',
  secondary: '#00D9D5',
  success: '#33FF2F',
  danger: '#FF002E',
  warning: '#F2DF0F',
  info: '#3A74E7',
  brand: '#28DB98',
  dusk: '#414D6B',
  red: '#FF728D',
  orange: '#F6A623',
  yellow: '#EED100',
  green: '#24CD97',
  blue: '#679EFF',
  purple: '#B669F9',
  light: '#EDEDED',
};

export type CommonColors = typeof colors;

export const light = {
  ...colors,
  paper: '#F2F5F6',
  disabled: '#C4C4C4',
  background: '#FFF',
  placeholder: '#6D6D6D',
  text: '#000',
  textLight: '#1B1B1B',
  textContrast: '#FFF',
  main: colors.primary,
  mainDark: colors.primaryLight,
  card: '#FFF',
  link: '#8E9095',
  border: '#D3D4D5',
};

export type Theme = typeof light;

export const dark: Theme = {
  ...colors,
  paper: '#2A2A2A',
  disabled: '#515151',
  background: '#000',
  placeholder: '#6D6D6D',
  text: '#FFF',
  textLight: '#D3D3D3',
  textContrast: '#FFF',
  main: colors.primaryLight,
  mainDark: colors.primary,
  card: '#1C1C1C',
  link: '#B5B7BC',
  border: '#343536',
};

2. Wrap your component with ThemeProvider with given customTheme.

<ThemeProvider customTheme={{light, dark}}>
  <App />
</ThemeProvider>