php-invert-color
invert hex color code
Installation
composer require villfa/invert-colorUsage
Here a basic example:
<?php
require_once 'vendor/autoload.php';
use InvertColor\Color;
use InvertColor\Exceptions\InvalidColorFormatException;
try {
echo Color::fromHex('#fff')->invert(); // #000000
} catch (InvalidColorFormatException $e) {
echo 'Invalid color: ', $e->getValue();
}Color::fromHex(string $color): Color - throws InvalidColorFormatException
$color:stringColor in HEX string. Accepted formats: #000000, #000, 000000, 000
InvertColor\Color::fromHex('#fff')->invert(); // #000000Color::fromRGB(array $rgb): Color - throws InvalidRGBException
$rgb:arrayColor as an array of RGB values.
InvertColor\Color::fromRGB([0, 255, 0])->invert(); // #ff00ffColor::invert([bool $bw]): string
$bw:boolOptional. A boolean value indicating whether the output should be amplified to black (#000000) or white (#ffffff), according to the luminance of the original color.
InvertColor\Color::fromHex('#000')->invert(); // #ffffff
InvertColor\Color::fromHex('#282b35')->invert(); // #d7d4ca
// amplify to black or white
InvertColor\Color::fromHex('282b35')->invert(true); // #ffffffColor::invertAsRGB([bool $bw]): array
$bw:boolOptional. A boolean value indicating whether the output should be amplified to black or white, according to the luminance of the original color.
InvertColor\Color::fromHex('#000')->invertAsRGB(); // [255, 255, 255]
InvertColor\Color::fromHex('#282b35')->invertAsRGB(); // [215, 212, 202]
// amplify to black or white
InvertColor\Color::fromHex('282b35')->invertAsRGB(true); // [255, 255, 255]Color::invertAsObj([bool $bw]): Color
$bw:boolOptional. A boolean value indicating whether the output should be amplified to black or white, according to the luminance of the original color.
InvertColor\Color::fromHex('#000')->invertAsObj()->getHex(); // #ffffff
InvertColor\Color::fromHex('#282b35')->invertAsObj()->getRGB(); // [215, 212, 202]
// amplify to black or white
InvertColor\Color::fromHex('282b35')->invertAsObj(true)->getRGB(); // [255, 255, 255]Color::getHex(): string
InvertColor\Color::fromHex('#FFF')->getHex(); // #ffffffColor::getRGB(): array
InvertColor\Color::fromHex('#fff')->getRGB(); // [255, 255, 255]Color::getLuminance(): float
InvertColor\Color::fromHex('#fff')->getLuminance(); // 1
InvertColor\Color::fromHex('#000')->getLuminance(); // 0Color::isBright(): bool
InvertColor\Color::fromHex('#fff')->isBright(); // true
InvertColor\Color::fromHex('#000')->isBright(); // falseColor::isDark(): bool
InvertColor\Color::fromHex('#fff')->isDark(); // false
InvertColor\Color::fromHex('#000')->isDark(); // trueTests
To validate and test the library:
composer run-script testAcknowledgement
This library is a port of the JS package invert-color.
More resources:
- https://stackoverflow.com/questions/35969656/how-can-i-generate-the-opposite-color-according-to-current-color
- https://stackoverflow.com/questions/3942878/how-to-decide-font-color-in-white-or-black-depending-on-background-color/3943023#3943023