D3.js color.brighter() Function

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The color.brighter() function of D3.js is used to make a copy of the color with some extra brightness or darkness in the original color.

Syntax:

color.brighter(k)

Parameter: This function accepts only one parameter k is the amount of brightness required in the original color. It is the Integer value.

Return Values: It returns the object.

Example 1: When the value of k is not given

HTML

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="UTF-8" /> 
        <meta
            name="viewport"
            content="width=device-width,  
                     initial-scale=1.0"/> 
        <title>D3.js color.brighter() Function</title> 
    </head> 
    <style> 
        .box { 
            height: 100px; 
            width: 100px; 
        } 
        .box1 { 
            height: 100px; 
            width: 100px; 
        } 
    </style> 
    <body> 
        Color without color.brighter() property 
        <div class="box"></div> 
        Color with color.brighter() property 
        <div class="box1"></div> 
        <!--fetching from CDN of D3.js -->
        <script type="text/javascript" src= 
                "https://d3js.org/d3.v4.min.js"> 
        </script> 
        <script> 
            let box = document.querySelector(".box"); 
            let box1 = document.querySelector(".box1"); 
            var color = d3.color("green"); 
            box.style.backgroundColor =  
              `rgb(${color.r},${color.g},${color.b})`; 
            var color = color.brighter(); 
            box1.style.backgroundColor =  
              `rgb(${color.r},${color.g},${color.b})`; 
        </script> 
    </body> 
</html> 

Output:

Example 2:

HTML

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="UTF-8" /> 
        <meta name="viewport"
              content="width=device-width,  
                       initial-scale=1.0" /> 
        <title>D3.js color.brighter() Function</title> 
    </head> 
    <style> 
        .box { 
            height: 100px; 
            width: 100px; 
        } 
        .box1 { 
            height: 100px; 
            width: 100px; 
        } 
    </style> 
    <body> 
        Color without color.brighter() property 
        <div class="box"></div> 
        Color with color.brighter(10) property 
        <div class="box1"></div> 
        <!--fetching from CDN of D3.js -->
        <script type="text/javascript" src= 
                "https://d3js.org/d3.v4.min.js"> 
        </script> 
        <script> 
            let box = document.querySelector(".box"); 
            let box1 = document.querySelector(".box1"); 
            var color = d3.color("green"); 
            box.style.backgroundColor =  
              `rgb(${color.r},${color.g},${color.b})`; 
            var color = color.brighter(10); 
            box1.style.backgroundColor =  
              `rgb(${color.r},${color.g},${color.b})`; 
        </script> 
    </body> 
</html> 

Output:

Example 3: When value of k < 0

HTML

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="UTF-8" /> 
        <meta name="viewport" 
              content="width=device-width,  
                       initial-scale=1.0" /> 
        <title>D3.js color.brighter() Function</title> 
    </head> 
    <style> 
        .box { 
            height: 100px; 
            width: 100px; 
        } 
        .box1 { 
            height: 100px; 
            width: 100px; 
        } 
    </style> 
    <body> 
        Color without color.brighter() property 
        <div class="box"></div> 
        Color with color.brighter(-10) property 
        <div class="box1"></div> 
        <!--fetching from CDN of D3.js -->
        <script type="text/javascript" src= 
                "https://d3js.org/d3.v4.min.js"> 
        </script> 
        <script> 
            let box = document.querySelector(".box"); 
            let box1 = document.querySelector(".box1"); 
            var color = d3.color("green"); 
            box.style.backgroundColor =  
              `rgb(${color.r},${color.g},${color.b})`; 
            var color = color.brighter(-10); 
            box1.style.backgroundColor = 
              `rgb(${color.r},${color.g},${color.b})`; 
        </script> 
    </body> 
</html> 

Output:

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