aristath/aricolor

A PHP library for color manipulation in themes and plugins

Hi there 👋

I’m Ari Stathopoulos, a developer from Greece.

Read my bio on my personal site, where you can also reach me.

Currently working on various projects for Emilia Capital, and contributing to WordPress Core as a sponsored contributor.

aricolor's Issues

Suggestion: Use alternate luminance calculation

The following formula more closely weights the color components to resemble how the human eye percieves the brightness component of a given color. You might consider using it instead of the current luminance formula:

protected function set_luminance() {
  $lum = ( 0.3 * $this->red ) + ( 0.59 * $this->green ) + ( 0.11 * $this->blue );
  $this->luminance = round( $lum );
}

Source: W3C: Checkpoint 2.2 - Ensure that foreground and background color combinations provide sufficient contrast when viewed by someone having color deficits or when viewed on a black and white screen

Composer support

Is there any possibility to install this project via composer? Composer says it can't find the package under aristath/ariColor

Thx. Great project btw!

Create releases

Hi.

You should create releases. This will allow installing the desired version via Composer and will automatically install the latest version if not manually specified.

Right now the only way to install it is to manually add the dev-master version in composer.json. It does not allow to install the package from command line. I personally prefer to use the CLI.

BTW:

{
    "name": "random/project",
    "require": {
        "aristath/ari-color": "dev-master",
    }
}

Wrong return

First, nice plugin! I was looking for something like this for a while.

I'm having a problem with your example to generate a darker color, I created a function:

function category_color_brightness( $color, $amount ) {

    // Create a new object using hex as our original color
    $color_obj = ariColor::newColor( $color, 'hex' );

    // Darken the color by some amount
    $result_color = $color_obj->getNew( 'lightness', $color_obj->lightness - $amount );

    // return HEX color
    return $result_color->hex;
}

The input $color is: '#505050' but it always returns: #0-3700-3700-370.

I tried with the $result_color->toCSS( 'hex' ); but it returns the same thing.

What I'm missing?