| public static brightness ( string $color ) : integer | ||
| $color | string | An HTML color, e.g.: #ffffcc. |
| return | integer | The brightness on a scale of 0 to 255. |
public static function brightness($color)
{
list($r, $g, $b) = self::getColor($color);
return round(($r * 299 + $g * 587 + $b * 114) / 1000);
} /**
* Returns the foreground color.
*
* @return string A HTML color code.
*/
public function foregroundColor()
{
return Horde_Image::brightness($this->backgroundColor()) < 128 ? '#fff' : '#000';
}