refactor!: update blog directory to src/data/blog

2026-08-14 11:29:33 +08:00 · 2025-02-25 19:33:31 +07:00
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+---
+author: Sat Naing
+pubDatetime: 2022-09-25T15:20:35Z
+title: Customizing AstroPaper theme color schemes
+featured: false
+draft: false
+tags:
+  - color-schemes
+  - docs
+description:
+  How you can enable/disable light & dark mode; and customize color schemes
+  of AstroPaper theme.
+---
+
+This post will explain how you can enable/disable light & dark mode for the website. Moreover, you'll learn how you can customize color schemes of the entire website.
+
+## Table of contents
+
+## Enable/disable light & dark mode
+
+AstroPaper theme will include light and dark mode by default. In other words, there will be two color schemes\_ one for light mode and another for dark mode. This default behavior can be disabled in SITE configuration object of the `src/config.ts` file.
+
+```js
+// file: src/config.ts
+export const SITE = {
+  website: "https://astro-paper.pages.dev/",
+  author: "Sat Naing",
+  desc: "A minimal, responsive and SEO-friendly Astro blog theme.",
+  title: "AstroPaper",
+  ogImage: "astropaper-og.jpg",
+  lightAndDarkMode: true, // true by default
+  postPerPage: 3,
+};
+```
+
+To disable `light & dark mode` set `SITE.lightAndDarkMode` to `false`.
+
+## Choose primary color scheme
+
+By default, if we disable `SITE.lightAndDarkMode`, we will only get system's prefers-color-scheme.
+
+Thus, to choose primary color scheme instead of prefers-color-scheme, we have to set color scheme in the primaryColorScheme variable inside `public/toggle-theme.js`.
+
+```js
+/* file: public/toggle-theme.js */
+const primaryColorScheme = ""; // "light" | "dark"
+
+// Get theme data from local storage
+const currentTheme = localStorage.getItem("theme");
+
+// other codes etc...
+```
+
+The **primaryColorScheme** variable can hold two values\_ `"light"`, `"dark"`. You can leave the empty string (default) if you don't want to specify the primary color scheme.
+
+- `""` - system's prefers-color-scheme. (default)
+- `"light"` - use light mode as primary color scheme.
+- `"dark"` - use dark mode as primary color scheme.
+
+<details><summary>Why 'primaryColorScheme' is not inside config.ts?</summary>
+
+> To avoid color flickering on page reload, we have to place the toggle-switch JavaScript codes as early as possible when the page loads. It solves the problem of flickering, but as a trade-off, we cannot use ESM imports anymore.
+
+[Click here](https://docs.astro.build/en/reference/directives-reference/#isinline) to know more about Astro's `is:inline` script.
+
+</details>
+
+## Customize color schemes
+
+Both light & dark color schemes of AstroPaper theme can be customized. You can do this in `src/styles/base.css` file.
+
+```css
+/* file: src/styles/base.css */
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+@layer base {
+  :root,
+  html[data-theme="light"] {
+    --color-fill: 251, 254, 251;
+    --color-text-base: 40, 39, 40;
+    --color-accent: 0, 108, 172;
+    --color-card: 230, 230, 230;
+    --color-card-muted: 205, 205, 205;
+    --color-border: 236, 233, 233;
+  }
+  html[data-theme="dark"] {
+    --color-fill: 47, 55, 65;
+    --color-text-base: 230, 230, 230;
+    --color-accent: 26, 217, 217;
+    --color-card: 63, 75, 90;
+    --color-card-muted: 89, 107, 129;
+    --color-border: 59, 70, 85;
+  }
+  /* other styles */
+}
+```
+
+In AstroPaper theme, `:root` and `html[data-theme="light"]` selectors are used as the light color scheme and `html[data-theme="dark"]` is used the dark color scheme. If you want to customize your custom color scheme, you have to specify your light color scheme inside `:root`,`html[data-theme="light"]` and dark color scheme inside `html[data-theme="dark"]`.
+
+Colors are declared in CSS custom property (CSS Variable) notation. Color property values are written in rgb values. (Note: instead of `rgb(40, 39, 40)`, only specify `40, 39, 40`)
+
+Here is the detail explanation of color properties.
+
+| Color Property       | Definition & Usage                                         |
+| -------------------- | ---------------------------------------------------------- |
+| `--color-fill`       | Primary color of the website. Usually the main background. |
+| `--color-text-base`  | Secondary color of the website. Usually the text color.    |
+| `--color-accent`     | Accent color of the website. Link color, hover color etc.  |
+| `--color-card`       | Card, scrollbar and code background color (like `this`).   |
+| `--color-card-muted` | Card and scrollbar background color for hover state etc.   |
+| `--color-border`     | Border color. Especially used in horizontal row (hr)       |
+
+Here is an example of changing the light color scheme.
+
+```css
+@layer base {
+  /* lobster color scheme */
+  :root,
+  html[data-theme="light"] {
+    --color-fill: 246, 238, 225;
+    --color-text-base: 1, 44, 86;
+    --color-accent: 225, 74, 57;
+    --color-card: 220, 152, 145;
+    --color-card-muted: 233, 119, 106;
+    --color-border: 220, 152, 145;
+  }
+}
+```
+
+> Check out some [predefined color schemes](https://astro-paper.pages.dev/posts/predefined-color-schemes/) AstroPaper has already crafted for you.