D3.js schemeBlues() Function

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The d3.schemeBlues[] function in D3.js is used to return a particular color from the “Blues” sequential color scheme which is returned as a HEX string.

Syntax:

d3.schemeBlues[k]

Parameters: This function accepts a single parameter as mentioned above and described below:

k: “k” is a number.

Return Values: It returns a HEX string.

Below given are a few examples of the function given above.

Example1:

<!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8" />  
    <meta name="viewport"
        path1tent="width=device-width,   
        initial-scale=1.0"/>  
          
    <title>D3.js schemeBlues[] Function</title>  
    <script src= "https://d3js.org/d3.v4.min.js"></script>  
    <script src= "https://d3js.org/d3-color.v1.min.js"></script>  
    <script src= "https://d3js.org/d3-interpolate.v1.min.js"></script>  
    <script src= "https://d3js.org/d3-scale-chromatic.v1.min.js"></script>  
</head>  
<body>  
    <center> 
    <h1 style="color:green;">GeeksForGeeks</h1> 
      
    <h3>D3.js schemeBlues[] Function</h3> 
      
    <script>  
        document.write(d3.schemeBlues[6][0]+"<br>");  
        document.write(d3.schemeBlues[6][1]+"<br>"); 
        document.write(d3.schemeBlues[6][2]+"<br>"); 
        document.write(d3.schemeBlues[6][3]+"<br>"); 
        document.write(d3.schemeBlues[6][4]+"<br>"); 
        document.write(d3.schemeBlues[6][5]); 
    </script>  
    </center> 
</body>  
</html>

Output:

Example2:

<!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8" />  
    <meta name="viewport"
        path1tent="width=device-width,   
        initial-scale=1.0"/>  
          
    <title>D3.js schemeBlues[] Function</title>  
    <script src= "https://d3js.org/d3.v4.min.js"></script>  
    <script src= "https://d3js.org/d3-color.v1.min.js"></script>  
    <script src= "https://d3js.org/d3-interpolate.v1.min.js"></script>  
    <script src= "https://d3js.org/d3-scale-chromatic.v1.min.js"></script>  
</head>  
<style>  
    div {  
        padding: 10px;  
        width: fit-content;  
        height: 20px;  
    }  
</style>  
<body>  
    <center> 
    <h1 style="color:green;">GeeksForGeeks</h1> 
      
    <h3>D3.js schemeBlues[] Function</h3> 
      
    <div class="b1">  
        <span>  
            D3.schemeBlues[6][0]  
        </span>  
    </div>  
    <div class="b2">  
        <span>  
            D3.schemeBlues[6][1]   
        </span>  
    </div>  
    <div class="b3">  
        <span>  
            D3.schemeBlues[6][2]  
        </span>  
    </div>  
    <div class="b4">  
        <span>  
            D3.schemeBlues[6][3]   
        </span>  
    </div>  
    <div class="b5">  
        <span>  
            D3.schemeBlues[6][4]  
        </span>  
    </div>  
    <div class="b6">  
        <span>  
            D3.schemeBlues[6][5]   
        </span>  
    </div>  
      
    <script>  
        // Array of colors is given  
        let color1 = d3.schemeBlues[6][0];  
        let color2 = d3.schemeBlues[6][1];  
        let color3 = d3.schemeBlues[6][2];  
        let color4 = d3.schemeBlues[6][3];  
        let color5 = d3.schemeBlues[6][4];  
        let color6 = d3.schemeBlues[6][5];  
  
        let b1 = document.querySelector(".b1");  
        let b2 = document.querySelector(".b2");  
        let b3 = document.querySelector(".b3");  
        let b4 = document.querySelector(".b4");  
        let b5 = document.querySelector(".b5");  
        let b6 = document.querySelector(".b6");  
          
        b1.style.backgroundColor = color1;  
        b2.style.backgroundColor = color2; 
        b3.style.backgroundColor = color3;  
        b4.style.backgroundColor = color4; 
        b5.style.backgroundColor = color5;  
        b6.style.backgroundColor = color6; 
    </script>  
    </center> 
</body>  
</html>

Output:

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