LESS - Contrast


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Description

It sets the contrast for the colors in the element and alters the difference between light and dark values. It has the following parameters −

  • color − It represents a color object.

  • dark − It is an optional parameter that sets dark color.

  • light − It is an optional parameter that sets light color.

  • threshold − It is an optional parameter that contains percentage between 0 - 100% and specifies transition from dark to light.

Example

The following example demonstrates the use of contrast color operation in the LESS file −

<html>
   <head>
      <title>Contrast</title>
      <link rel = "stylesheet" type = "text/css" href = "style.css"/>
   </head>

   <body>
      <h2>Example of Contrast Color Operation</h2>
      <div class = "myclass1">
         <p>color :<br>#426105</p>
      </div><br>

      <div class = "myclass2">
         <p>result :<br>#81F79F</p>
      </div>
   </body>
</html>

Next, create the style.less file.

style.less

.myclass1 {
   height:100px;
   width:100px;
   padding: 30px 0px 0px 25px;
   background-color: hsl(80, 90%, 20%);
   color:white;
}

.myclass2 {
   height:100px;
   width:100px;
   padding: 30px 0px 0px 25px;
   background-color: contrast(hsl(80, 90%, 20%), #81F79F, #01DFA5, 30%);
   color:white;
}

You can compile the style.less to style.css by using the following command −

lessc style.less style.css

Execute the above command, it will create the style.css file automatically with the following code −

style.css

.myclass1 {
   height: 100px;
   width: 100px;
   padding: 30px 0px 0px 25px;
   background-color: #426105;
   color: white;
}

.myclass2 {
   height: 100px;
   width: 100px;
   padding: 30px 0px 0px 25px;
   background-color: #81F79F;
   color: white;
}

Output

Follow these steps to see how the above code works −

  • Save the above html code in the contrast.html file.

  • Open this HTML file in a browser, the following output will get displayed.

Less Contrast
less_color_operation.htm
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