Tint

tint() maps an image onto one hue while keeping luminance.

Example

Source	Cyan tint

<?php

use Alto\Image\Image;

Image::open('source-landscape.png')
    ->tint('#00b7ff', strength: 0.7)
    ->save('tint.png');

Options

Edge cases

• Strength 0 produces the neutral luminance image.
• Strength 1 applies the full tint while retaining light and dark regions.
• Dimensions and alpha do not change.

Driver support

Imagick is exact. GD approximates tint with grayscale and colourization filters.