Add background color to css

CSS Backgrounds

The CSS background properties are used to add background effects for elements.

In these chapters, you will learn about the following CSS background properties:

• background-color
• background-image
• background-repeat
• background-attachment
• background-position
• background (shorthand property)

CSS background-color

The background-color property specifies the background color of an element.

Example

The background color of a page is set like this:

With CSS, a color is most often specified by:

• a valid color name — like «red»
• a HEX value — like «#ff0000»
• an RGB value — like «rgb(255,0,0)»

Look at CSS Color Values for a complete list of possible color values.

Other Elements

You can set the background color for any HTML elements:

Example

Here, the ,

, and elements will have different background colors:

div background-color: lightblue;
>

Opacity / Transparency

The opacity property specifies the opacity/transparency of an element. It can take a value from 0.0 — 1.0. The lower value, the more transparent:

Example

Note: When using the opacity property to add transparency to the background of an element, all of its child elements inherit the same transparency. This can make the text inside a fully transparent element hard to read.

Transparency using RGBA

If you do not want to apply opacity to child elements, like in our example above, use RGBA color values. The following example sets the opacity for the background color and not the text:

You learned from our CSS Colors Chapter, that you can use RGB as a color value. In addition to RGB, you can use an RGB color value with an alpha channel (RGBA) — which specifies the opacity for a color.

An RGBA color value is specified with: rgba(red, green, blue, alpha). The alpha parameter is a number between 0.0 (fully transparent) and 1.0 (fully opaque).

Tip: You will learn more about RGBA Colors in our CSS Colors Chapter.

Example

The CSS Background Color Property

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background-color

CSS-свойство background-color CSS устанавливает цвет фона элемента.

Интерактивный пример

Синтаксис

/* Словесные значения */ background-color: red; /* Шестнадцатеричное значение */ background-color: #bbff00; /* Шестнадцатеричное значение с alpha-каналом */ background-color: #11ffee00; /* 00 - полностью прозрачный */ background-color: #11ffeeff; /* ff - непрозрачный */ /* RGB-значение */ background-color: rgb(255, 255, 128); /* RGBA-значение или RGB с alpha-каналом */ background-color: rgba(117, 190, 218, 0.0); /* 0.0 - полностью прозрачный */ background-color: rgba(117, 190, 218, 0.5); /* 0.5 - полупрозрачный */ background-color: rgba(117, 190, 218, 1.0); /* 1.0 - непрозрачный */ /* HSLA-значение */ background-color: hsla(50, 33%, 25%, 0.75); /* Специальные словесные значения */ background-color: currentColor; background-color: transparent; /* Общие значения */ background-color: inherit; background-color: initial; background-color: unset; 

Свойство background-color определяется единственным значением .

Значения

Формальный синтаксис

Примеры

HTML

div class="exampleone"> Lorem ipsum dolor sit amet, consectetuer div> div class="exampletwo"> Lorem ipsum dolor sit amet, consectetuer div> div class="examplethree"> Lorem ipsum dolor sit amet, consectetuer div> 

CSS

.exampleone  background-color: teal; color: white; > .exampletwo  background-color: rgb(153, 102, 153); color: rgb(255, 255, 204); > .examplethree  background-color: #777799; color: #FFFFFF; > 

Результат

Проблемы доступности

Важно обеспечить достаточный цветовой контраст между цветом текста и фоном, чтобы люди со слабым зрением могли его прочитать, но при этом должна быть достаточная разница между введённым текстом и текстом placeholder, чтобы пользователь не путал их.

Коэффициент цветового контраста определяется путём сравнения яркости текста placeholder и цветом фона формы ввода. Чтобы соответствовать рекомендациям Web Content Accessibility Guidelines (WCAG), требуется соотношение 4.5:1 для основного текста и 3:1 для более крупного текста, например, заголовков. Крупный текст определяется как 18.66px и больше с жирным начертанием или 24px и больше с обычным начертанием.

Спецификации

Совместимость с браузерами

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This page was last modified on 10 окт. 2022 г. by MDN contributors.

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How to Set Background Color with HTML and CSS

First thing you should know is that there are different types of HTML colors, such as Hex color codes, HTML color names, RGB and RGBa values, HSL colors, etc. To choose your preferred color use our Color Tools.

In this snippet, you can find many different ways of adding a background color. Let’s start from the easiest one.

Add the style attribute to the element

You can set a background color for an HTML document by adding style=»background-color:» to the element.

Example of setting a background color with the style attribute:

html> html> head> title>Title of the document title> head> body style="background-color:#1c87c9;"> h1>Some heading h1> p>Some paragraph for example. p> body> html>

Result

Some paragraph for example.

Add the CSS background-color property to the element

The background-color property is used to change the background color. Inserting it to the element you will have a full colored cover of the page.

Example of setting a background color with the CSS background-color property:

html> html> head> title>Title of the document title> style> body < background-color: #1c87c9; > style> head> body> body> html>

You can also add a background color to specific elements in your document. For example, let’s see how to change the color of the heading and paragraphs.

Example of adding a background color to specific elements:

html> html> head> title>Title of the document title> style> body < background-color: #e6ebef; > h2 < background-color: #8ebf42; > p < background-color: #1c87c9; > style> head> body> h2>Some heading with green background. h2> p>Some paragraph with blue background. p> body> html>

Let’s see another example, where we add a background color with a color name value to the element. We specify a RGB value for the , HSL for the , and RGBa value for the element.

Example of setting background colors with different color types:

html> html> head> title>Title of the document title> style> h1 < background-color: lightblue; > h2 < background-color: rgb(142, 191, 66); > p < background-color: hsl(300, 100%, 25%); > span < background-color: rgba(255, 127, 80, 0.58); > style> head> body> h1>Example h1> h2>Some heading with green background. h2> p>Some paragraph with blue background. p> span>Some paragraph for span> body> html>

Create a background with gradients

Gradient backgrounds let you create smooth transitions between two or more specified colors.

There are two types of gradient backgrounds: linear-gradient and radial-gradient.

In linear-gradient backgrounds, you can set a starting point for the colors. If you don’t mention a starting point, it will automatically set «top to bottom» by default.

Example of setting a linear-gradient background:

html> html> head> title>Title of the document title> style> #grad < height: 500px; background-color: blue;/* For browsers that do not support gradients */ background-image: linear-gradient(to right, #1c87c9, #8ebf42); > style> head> body> h1>Right to Left Linear Gradient background h1> div id="grad"> div> body> html>

The given example shows a linear gradient that starts from the left. It starts from blue, transitioning to green. Change it according to your requirements.

In radial gradient backgrounds, the starting point is defined by its center.

Example of setting a radial-gradient background:

html> html> head> title>Title of the document title> style> #grad < height: 500px; background-color: grey;/* For browsers that do not support gradients */ background-image: radial-gradient(#e6ebef, #1c87c9, #8ebf42); > style> head> body> h1>Radial Gradient Background h1> div id="grad"> div> body> html>

Create a changing background

You can create a background which will change its colors in the mentioned time. For that, add the animation property to the element. Use the @keyframes rule to set the background colors through which you’ll flow, as well as the length of time each color will appear on the page.

Example of creating a changing background:

html> html> head> title>Title of the document title> style> body < -webkit-animation: colorchange 20s infinite; animation: colorchange 20s infinite; > @-webkit-keyframes colorchange < 0% < background: #8ebf42; > 25% < background: #e6ebef; > 50% < background: #1c87c9; > 75% < background: #095484; > 100% < background: #d0e2bc; > > @keyframes colorchange < 0% < background: #8ebf42; > 25% < background: #e6ebef; > 50% < background: #1c87c9; > 75% < background: #095484; > 100% < background: #d0e2bc; > > style> head> body> h1>Changing Background h1> body> html>

The percentages specify the animation length mentioned in «colorchange» (e.g. 20s).

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