The background-color
CSS property sets the background color of an element.
background-color: red;
background-color: indigo;
background-color: #bbff00;
background-color: #bf0;
background-color: #11ffee00;
background-color: #1fe0;
background-color: #11ffeeff;
background-color: #1fef;
background-color: rgb(255 255 128);
background-color: rgb(117 190 218 / 50%);
background-color: hsl(50 33% 25%);
background-color: hsl(50 33% 25% / 75%);
background-color: currentcolor;
background-color: transparent;
background-color: inherit;
background-color: initial;
background-color: revert;
background-color: revert-layer;
background-color: unset;
The background-color
property is specified as a single <color>
value.
<color>
-
The uniform color of the background. It is rendered behind any background-image
that is specified, although the color will still be visible through any transparency in the image.
It is important to ensure that the contrast ratio between the background color and the color of the text placed over it is high enough that people experiencing low vision conditions will be able to read the content of the page.
Color contrast ratio is determined by comparing the luminance of the text and background color values. In order to meet current Web Content Accessibility Guidelines (WCAG), a ratio of 4.5:1 is required for text content and 3:1 for larger text such as headings. Large text is defined as 18.66px and bold or larger, or 24px or larger.
This example demonstrates the applying background-color
to HTML <div>
elements using different CSS <color>
values.
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: transparent;
}
.exampletwo {
background-color: rgb(153 102 153);
color: rgb(255 255 204);
}
.examplethree {
background-color: #777799;
color: #ffffff;
}
Result
This example demonstrates the use of background-color
on HTML <table>
elements, including <tr>
rows and <td>
cells.
HTML
<table>
<tr id="r1">
<td id="c11">11</td>
<td id="c12">12</td>
<td id="c13">13</td>
</tr>
<tr id="r2">
<td id="c21">21</td>
<td id="c22">22</td>
<td id="c23">23</td>
</tr>
<tr id="r3">
<td id="c31">31</td>
<td id="c32">32</td>
<td id="c33">33</td>
</tr>
</table>
CSS
table {
border-collapse: collapse;
border: solid black 1px;
width: 250px;
height: 150px;
}
td {
border: solid 1px black;
}
#r1 {
background-color: lightblue;
}
#c12 {
background-color: cyan;
}
#r2 {
background-color: grey;
}
#r3 {
background-color: olive;
}
Result
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