Change bootstrap colors

Change bootstrap colors DEFAULT

How to change the bootstrap primary color?

Bootstrap 5 (update 2021)

The method is still the same for Bootstrap 5.

https://codeply.com/p/iauLPArGqE

Bootstrap 4

To change the primary, or any of the theme colors in Bootstrap 4 SASS, set the appropriate variables before importing . This allows your custom scss to override the !default values...

Demo: https://codeply.com/go/f5OmhIdre3


In some cases, you may want to set a new color from another existing Bootstrap variable. For this @import the functions and variables first so they can be referenced in the customizations...

Demo: https://codeply.com/go/lobGxGgfZE


Also see: this answer, this answer or changing the button color in (CSS or SASS)


It's also possible to change the primary color with CSS only but it requires a lot of additional CSS since there are many variations (btn-primary, alert-primary, bg-primary, text-primary, table-primary, border-primary, etc...) and some of these classes have slight colors variations on borders, hover, and active states. Therefore, if you must use CSS it's better to use target one component such as changing the primary button color.

Sours: https://stackoverflow.com/questions/38792005/how-to-change-the-bootstrap-primary-color

How to Customize Bootstrap

You may want to customize Bootstrap for several reasons. You may want to change some aspect of the look or styles such as colors, fonts, or borders. You may want to change some aspect of the responsive layout like grid breakpoints or gutter widths. Additionally, you may want to extend Bootstrap classes with new custom classes (ie; btn-custom).


In general, there are 2 methods used to customize Bootstrap:

1. Simple CSS Overrides

For maintainability, CSS customizations should be put in a separate file, so that the remains unmodified. The reference to the custom.css follows after the bootstrap.css for the overrides to work...

<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css"> <link rel="stylesheet" type="text/css" href="css/custom.css">

Just add whatever changes are needed in the custom CSS. For example, say I wanted to remove rounded borders from Cards, Buttons and Form Inputs. I add the CSS rule in the …

/* remove rounding from cards, buttons and inputs */ .card, .btn, .form-control { border-radius: 0; }

With this simple CSS change, the Cards, Buttons and Form Inputs now have square corners…

Note: There’s no need to use !important in the custom CSS, unless you're overriding one of the Bootstrap Utility classes. CSS specificity always works for one CSS class to override another.

Using CSS overrides is feasible for simple Bootstrap customizations, but for more extensive changes, SASS is the recommended method. Suppose for example you want to change the default blue "primary" color in Bootstrap to another color (eg. red). You can make a simple CSS override for the button like this...

.btn-primary { background-color: red; }

This does work to make the button red, but it doesn't change the other btn-primary states like ":hover" and ":active". It also doesn't change the "primary" color throughout the CSS for , , , , , etc...

2. Customize using SASS

If you’re familiar with SASS (and you should be to use this method), you can customize Bootstrap with your own custom.scss. There is a section in the Bootstrap docs that explains this, however the docs don't explain how to utilize existing variables in your custom.scss.

The overrides and “customization” are defined in a custom.scss file (you can name it whatever you want) that is separate from the Bootstrap SASS source files. This way any changes you make don't impact the Bootstrap source, which makes future changes and upgrades much easier.

1. Consider Bootstrap’s SASS folder structure, alongside your custom.scss...

|-- \bootstrap | |-- \scss | | |-- \mixins | | |-- \utilities | | |-- bootstrap.scss | | |-- variables.scss | | |-- functions.scss | | |-- ...more bootstrap scss files | custom.scss

2. In your custom.scss, import the Bootstrap files that are needed for the overrides. (Usually, this is just variables.scss. In some cases, with more complex cutomizations, you may also need the functions, mixins, and other Bootstrap files.). Make the changes, then @import "bootstrap". It's important to import Bootstrap after the changes.

For example, let’s change the body background-color to light-gray #eeeeee, and change the blue primary contextual color to Bootstrap's $purple variable...

/* custom.scss */ /* import the necessary Bootstrap files */ @import "bootstrap/functions"; @import "bootstrap/variables"; /* -------begin customization-------- */ /* simply assign the value */ $body-bg: #eeeeee; /* or, use an existing variable */ $theme-colors: ( primary: $purple ); /* -------end customization-------- */ /* finally, import Bootstrap to set the changes! */ @import "bootstrap";

2a (optional). Also, you can extend existing Bootstrap classes after the to create new custom classes. For example, here is a new class that extends (inherits from) the Bootstrap class, and then adds a background-color and color…

/* optionally create new custom classes from existing classes */ .row-dark { @extend .row; background-color: #333333; color: #ffffff; }

3. Build with SASS. The CSS output will contain the custom overrides! Don’t forget to check the includePaths if your @imports fail. For a full list of variables you can override, see the file. There are also these global variables.

Remember, with SASS you must @import “bootstrap” after the customizations in to make them work! Once the SASS is compiled to CSS (this is done using a server-side SASS compiler/processor), the resulting CSS is the customized Bootstrap.

In summary, here’s how the SASS customizations work:

First, when the file is processed using SASS, the values defined in the Bootstrap .

Next, our custom values are set, which will override any of the variables that had values set in Bootstrap .

Finally, Bootstrap is imported () which enables the SASS processor (A.K.A. compiler) to generate all the appropriate CSS using both the Bootstrap defaults and the custom overrides.

Customization is important since not everyone wants that overly recognizable Bootstrap look.

Sours: https://bootstrap.themes.guide/how-to-customize-bootstrap.html
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How to Customize Bootstrap

There various reasons to customize Bootstrap. You may want to:

  • Change the existing Bootstrap styles such as colors, fonts, or borders
  • Change the Bootstrap grid layout such as breakpoints or gutter widths
  • Extend Bootstrap classes with new custom classes (ie: btn-custom)

Whatever the reason is, there are 2 ways to customize Bootstrap. I will start with the easier, less robust method using CSS, and then explain the more advanced method using SASS.

This method works by defining CSS rules that match Bootstrap’s CSS rules which creates a style “override”. This method is easy to maintain, and allows you to upgrade to future minor versions of Bootstrap without breaking your customized styles.

In CSS, order matters. The last definition of a CSS rule will override any previously defined rules where the CSS selectors & properties match. This is how the CSS override customization method works.

Our CSS customizations are placed in a separate file, so that the remains unmodified. The reference to the follows after the which make the overrides work...

<link rel="stylesheet" type="text/css" href="bootstrap.min.css"> <link rel="stylesheet" type="text/css" href="custom.css">

We add whatever changes are needed in the file. For example, say I wanted to remove rounded borders from Cards, Buttons and Form Inputs.

I add a CSS rule in the …

/* remove rounding from cards, buttons and inputs */
.card, .btn, .form-control { border-radius: 0; }

With this simple CSS change, the Cards, Buttons and Form Inputs now have square corners…

Here’s the working demo on Codeply:

CSS Specificity is Important.

When making customizations, you need to understand CSS Specificity.

Overrides in the need to use selectors that are as specific as the . For example, here’s the CSS for Bootstrap 4 shown on a dark background Navbar ():

.navbar-dark .navbar-nav .nav-link {
color: rgba(255, 255, 255, 0.5);
}

To override the color, this won’t work ❌:

.navbar-dark .nav-link {
color: silver;
}

My selector in should match the Bootstrap selector ✅:

.navbar-dark .navbar-nav .nav-link {
color: silver;
}

Of course, using a more specific selector (higher specificity) will also work. Say for example you only wanted to change the colors is a Navbar with …✅:

#navbar1 .navbar-nav .nav-link {
color: silver;
}

Note: There’s no need to use `!important` in the custom CSS, unless you’re overriding one of the Bootstrap Utility classes. CSS Specificity always works for one CSS class to override another.

By putting all the Bootstrap overrides in a separate it’s much easier to keep track of changes and revert back to default the Bootstrap styles if necessary. If you make changes directly to the default stylesheet, it would become very difficult to maintain and keep track of changes.

Any minor upgrades to Bootstrap versions can be done by simply swapping out the , without breaking your customized styles in .

Using CSS overrides is feasible for simple Bootstrap customizations, but for more extensive changes, SASS is the better method. Suppose for example you want to change the default blue “primary” color in Bootstrap to another color (eg. red). You can make a simple CSS override for the button like this...

.btn-primary { background-color: red; }

Yes, this works to make the button red. However, it doesn't change the other states like ":hover", ":active" and “disabled”. It also doesn't change the "primary" color throughout the entire CSS for , , , , , etc...

For more extensive Bootstrap customizations like this, you’ll want to use SASS.

First let’s talk about SASS, and how it relates to Bootstrap:

  • SASS is a stylesheet language and CSS pre-processor.
  • SASS must be compiled into CSS to be “understood” by a Web browser.
  • Files written in SASS usually have the extension.
  • The entire Bootstrap 4 CSS source is written in the SASS.

Since the entire Bootstrap 4 CSS source is written in the SASS language, the Bootstrap 4 CSS files are compiled using a SASS compiler (A.K.A pre-processor). Therefore, it only makes sense that SASS is the recommended way to customize Bootstrap.

First, let’s consider the Bootstrap 4 SASS files & folder structure…

|-- \bootstrap
| |-- \scss
| | |-- \mixins
| | |-- \utilities
| | |-- _functions.scss
| | |-- _mixins.scss
| | |-- _variables.scss
| | |-- (...more bootstrap scss source files)
| | |-- bootstrap-grid.scss
| | |-- bootstrap-reboot.scss
| | |-- bootstrap.scss

What you need know about the Bootstrap SASS source files

  • The file is the “main” file that references all other SCSS source files using SASS statements.
  • The file contains all the SASS variables that are available to customize and override.
  • The contains variables that are dependent on the and files.
  • The Bootstrap CSS can be compiled with or without the Grid () and Reboot ().

Commonly used Bootstrap SASS variables and maps

To know Bootstrap, is to know that there are a ton of SASS variables. Here are the more common ones that are helpful to know about…

Theme Colors

When it comes to customizing the default Bootstrap look, changing the color palette 🎨 is often the first thing that comes to mind. To change these colors use the SASS map…

$theme-colors: (
"primary": ..,
"secondary": ..,
"success": ..,
"info": ..,
"warning": ..,
"danger": ..,
"light": ..,
"dark": ..
);

Enable-…

These self-explanatory true/false variables can be toggled as desired…

$enable-rounded: true;
$enable-shadows: true;
$enable-gradients: false;
$enable-grid-classes: true;
$enable-print-styles: true;

Grid Breakpoints

The default responsive breakpoints are based on typical device widths, and can be changed as needed. Changing the SASS map will change the breakpoint for the grid, as well as any other responsive classes (e.g. )…

$grid-breakpoints: (
xs: 0,
sm: 576px,
md: 768px,
lg: 992px,
xl: 1200px
);

Vertical and Horizontal Spacing

The “spacer” is used as the basis for padding and margins in many areas of the Bootstrap CSS. Increasing it slightly (eg. ) will add more whitespace between some elements.

$spacer: 1rem;

As explained in the Bootstrap docs, your customizations should be kept in a separate file that lives outside the Bootstrap SASS source files. Be sure the keep the nearby for reference when creating your .

|-- \bootstrap
| |-- \scss
| | |-- \mixins
| | |-- \utilities
| | |-- (...more bootstrap .scss source files)| custom.scss <-- changes go here outside bootstrap's SASS source

Similar to our CSS overrides explained earlier, using a separate file allows us to make changes that don’t impact the Bootstrap source, which makes future changes and upgrades much easier without overwriting changes in the .

As stated earlier, there are different aspects of Bootstrap you might want to change or override with your own styles. I will show you an example of each.

Change an existing style such as colors, fonts, or borders…

Let’s revisit the change (customization) we made earlier to . Instead of only changing the , we want to change the theme color across the entire CSS. Here’s how this would be done in the ...

custom.scss/* import only the necessary Bootstrap files */
@import "bootstrap/scss/functions";
@import "bootstrap/scss/variables";/* -------begin customization-------- *//* change the primary theme color to red */
$theme-colors: (
primary: red;
);

/* -------end customization-------- *//* finally, import Bootstrap to set the changes! */
@import "bootstrap";

Notice: The Bootstrap paths are relative to the , and will vary depending on your project environment.

As you can see in the we @import the Bootstrap files that are needed for the overrides. (Usually, this is just _. In some cases, with more complex customizations, you will need the and ). Make the changes, then . It’s important to make the changes before the . Here’s another example:

Add a new theme color (btn-purple, bg-purple, text-purple, etc..)…

custom.scss/* import only the necessary Bootstrap files */
@import "bootstrap/scss/functions";
@import "bootstrap/scss/variables";/* -------begin customization-------- *//* change the primary theme color, and add a new theme color */
$theme-colors: (
primary: red;
purple: $purple; // $purple is defined in _variables.scss
);
/* -------end customization-------- *//* finally, import Bootstrap to set the changes! */
@import "bootstrap";

Change the grid layout breakpoints…

custom.scss/* import only the necessary Bootstrap files */
@import "bootstrap/scss/functions";
@import "bootstrap/scss/variables";/* --- begin customization ---- *//* change the primary theme color to red */
$theme-colors: (
primary: red;
);/* increase the width of the grid lg and xl breakpoints */
$grid-breakpoints: (
lg: 1024px,
xl: 1366px
);/* increase container width for the wider lg and xl breakpoints */
$container-max-widths: (
lg: 1050px,
xl: 1400px
);
/* --- end customization ------ *//* finally, import Bootstrap to set the changes! */
@import "bootstrap";

Extend Bootstrap classes with new custom classes (ie: row-dark)…

You can extend existing Bootstrap classes to create new custom classes. For example, here is a new class that extends (inherits from) the Bootstrap class, and then adds a background-color and color. Notice how these customizations are placed after the .

custom.scss/* 1. import only the necessary Bootstrap files */
@import "bootstrap/scss/functions";
@import "bootstrap/scss/variables";/* 2. begin customization ---- */(variable changes as before here...)/* --- end customization ------ *//* 3. import Bootstrap to set the changes! */
@import "bootstrap";/* 4. add @mixin or @extend customizations here *//* create new custom classes from existing classes */
.row-dark {
@extend .row;
background-color: #333333;
color: #ffffff;
}
/* use @mixins */
.btn-custom {
@include button-variant(red, white, red, red);
}

Once the contains the appropriate customizations, you’ll need to compile the SASS to generate the resulting CSS.

There are several tools that can be used to compile the SASS into CSS. All of the tools run on a Web server because, as stated before, Web browsers don’t “understand” SASS. Here are the most popular SASS building tools:

Node SASS

Gulp SASS

Webpack SASS

IMO, using NPM and Node is the easiest way to set-up a SASS compiler.

SASS Customization Summary…

1- First, our custom values are set in , will override any of the variables that had values set in Bootstrap .

2- Then, Bootstrap is imported () which enables the SASS compiler to generate all the appropriate CSS using both the Bootstrap defaults, and the custom overrides.

3- Finally, Any additional custom classes that @extend Bootstrap classes can be defined after the . These are added in the generated CSS after the customized Bootstrap classes from step 2.

If you prefer not to work directly with the SASS source and compilers there are tools available that make the SASS customization process easier. Themestr.app is a Bootstrap theme builder that provides a simple Web-based UI to make the changes and generates the and for download.

Sours: https://uxplanet.org/how-to-customize-bootstrap-b8078a011203
Bootstrap 4 Theme Customization (with Sass) - BOOTSTRAP 4 TUTORIAL

Discover how to override theme colors in Bootstrap 5 using Sass

Bootstrap Sass override variables by using the right import sequence

Bootstrap 5 (and before) allows overriding Sass variables by declaring them before actually importing Bootstrap. That’s the meaning of the !default declaration in _variables.scss.

Like this, in the latest v4.5 version, overriding theme colors is easy. You declare them in your own variables.scss file e.g. like this:

Bootstrap 5 changes the $theme-colors definition

Whereas in v4.5.3 the $theme-colors map was defined as a merge between the existing variable and the default map, in v5.0.0 the merge statement disappeared:

With the merge command, the keys in the second map (your own definitions) take priority over the keys in the first map. That is, in case they are identical.

Without this merge command, default Bootstrap variables are left out of the resulting $theme-colors map. Thus, make sure to include also the defaults when you override $theme-colors in v5.0.0-beta2. That is, if you need those defaults of course.

Steven

Bootstrap 5 variables utilize $primary instead of $theme-color(“primary”)

We illustrate with an example below. Many more similar declarations are present in _variables.scss.

Argh!

So you override the $theme-colors map, only to find out that also the individual default variables are used directly in the toolkit.

The right way to override $theme-colors in Bootstrap 5

In order to make sure the toolkit always works with your custom colors, a somewhat overhead definition is needed:

Only this way, the Bootstrap 5 toolkit will utilize your custom colors in a consistent manner throughout the complete stylesheet.

Github discussion board topic

Below additional background information on the Bootstrap github discussion board:

Discover how to override theme colors in Bootstrap 5 using Sass

use of $primary instead of $theme-color(“primary”) in _variables.scss complicates color overrides · Discussion #32651 · twbs/bootstrap

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web. – twbs/bootstrap

https://github.com/twbs/bootstrap/discussions/32651

Sours: https://blog.assistancy.be/blog/bootstrap-5-override-theme-colors-sass

Bootstrap colors change

How to change the bootstrap primary color?

Update 2020 for Bootstrap 4

To change the primary, or any of the theme colors in Bootstrap 4 SASS, set the appropriate variables before importing . This allows your custom scss to override the !default values...

Demo: https://codeply.com/go/f5OmhIdre3


In some cases, you may want to set a new color from another existing Bootstrap variable. For this @import the functions and variables first so they can be referenced in the customizations...

Demo: https://codeply.com/go/lobGxGgfZE


Also see: this answer, this answer or changing the button color in (CSS or SASS)


It's also possible to change the primary color with CSS only but it requires a lot of additional CSS since there are many variations (btn-primary, alert-primary, bg-primary, text-primary, table-primary, border-primary, etc...) and some of these classes have slight colors variations on borders, hover, and active states. Therefore, if you must use CSS it's better to use target one component such as changing the primary button color.

These solutions will also work for Bootstrap 5 alpha


there are two ways you can go to

and change the color in this adjustments and download the bootstrap customized.

Or you can use sass with this version https://github.com/twbs/bootstrap-sass and import in your sass assets/stylesheets/_bootstrap.scss but before import this you can change the defaults variable colors

and compile the result


I've created this tool: https://lingtalfi.com/bootstrap4-color-generator, you simply put primary in the first field, then choose your color, and click generate.

Then copy the generated scss or css code, and paste it in a file named my-colors.scss or my-colors.css (or whatever name you want).

Once you compile the scss into css, you can include that css file AFTER the bootstrap CSS and you'll be good to go.

The whole process takes about 10 seconds if you get the gist of it, provided that the my-colors.scss file is already created and included in your head tag.

Note: this tool can be used to override bootstrap's default colors (primary, secondary, danger, ...), but you can also create custom colors if you want (blue, green, ternary, ...).

Note2: this tool was made to work with bootstrap 4 (i.e. not any subsequent version for now).

Sours: https://newbedev.com/how-to-change-the-bootstrap-primary-color
Bootstrap Theme Color Changes - Geeks Bootstrap 5 Template

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