The imagecolorclosesthwb() function gets the index of the color which has the hue, white and blackness
Syntax
imagecolorclosesthwb ( $img, $red, $green, $blue )
Parameters
img: Create image with imagecreatetruecolor()
red: Red color component
green: Green color component
blue: Blue color component
Return
The imagecolorclosesthwb() function returns an integer with the index of the color which has the hue, white and blackness nearest the given color.
Example
The following is an example:
<?php
$img = imagecreatefromgif('https://www.tutorialspoint.com/images/html.gif');
echo 'HWB = '. imagecolorclosesthwb($img, 50, 110, 90);
imagedestroy($img);
?>Output
The following is the output:
HWB = 87