To set image brightness in CSS, use filter brightness(%). Remember, the value 0 makes the image black, 100% is for original image and default. Rest, you can set any value of your choice, but values above 100% would make the image brighter.
Example
Let us now see an example −
<!DOCTYPE html>
<html>
<head>
<style>
img.demo {
filter: brightness(120%);
}
</style>
</head>
<body>
<h1>Learn MySQL</h1>
<img src="https://www.tutorialspoint.com/mysql/images/mysql-mini-logo.jpg" alt="MySQL" width="160" height="150">
<h1>Learn MySQL</h1>
<p>Below image is brighter than the original image above.</p>
<img class="demo" src="https://www.tutorialspoint.com/mysql/images/mysql-mini-logo.jpg" alt="MySQL" width="160" height="150">
</body>
</html>Output
