Light and Dark Theme using Mixin

Light and Dark Theme using Mixin and implement in your web projects.

It is possible to switch between a dark and light theme using simple SCSS  / SASS without many code lines. We can leverage Mixin to achieve the change in light and dark themes. Following is the code for creating Mixin which can easily switch between light and dark themes. 

We will leverage two functions lighten and darken inside Mixin two achieve the functionality. Lighten function will help lighten the applied colour, and darken function will help darken the used colour. 

$primary-color: #000000;
$text-color: #3af80a;
$secondary-color: #432396;

@mixin theme($light-theme: true) {
    @if $light-theme{
        background: lighten($primary-color, 100%);
        color: darken ($text-color, 100%);
    }
}

Now create a class called light and apply it to the body tag. Inside the light class now include the theme mixin to enable the theme switch property.

.light{
    @include theme ($light-theme: true);
}

If the $light-theme is true, the HTML page will apply a light theme, the background colour will be light, and the text colour will be dark. If the $light-theme is false, the HTML page will apply a dark theme. 

.light{
    @include theme ($light-theme: false);
}

The above code will create a dark background and light text colour. In the next tutorial, we will learn Extension and Operators in SASS / SCSS.