/**
* Get distance from the given color using the Delta E method
*
* @param Jetpack_Color $color
*
* @return float
*/
public function getDistanceLabFrom(Jetpack_Color $color)
{
$lab1 = $this->toLabCie();
$lab2 = $color->toLabCie();
$lDiff = abs($lab2['l'] - $lab1['l']);
$aDiff = abs($lab2['a'] - $lab1['a']);
$bDiff = abs($lab2['b'] - $lab1['b']);
$delta = sqrt($lDiff + $aDiff + $bDiff);
return $delta;
}