Tailwind shade generator using Spatie/Color

SetupColors.php

<?php

namespace App\Traits;

use Spatie\Color\Hex;
use Spatie\Color\Rgb;

trait SetupColors
{
    protected function darken(Hex $hex, float $intensity): Rgb
    {
        $color = $hex->toRgb();

        $r = round($color->red() * $intensity);
        $g = round($color->green() * $intensity);
        $b = round($color->blue() * $intensity);

        return Rgb::fromString("rgb({$r}, {$g}, {$b})");
    }

    protected function lighten(Hex $hex,  float $intensity): Rgb
    {
        $color = $hex->toRgb();

        $r = round($color->red() + (255 - $color->red()) * $intensity);
        $g = round($color->green() + (255 - $color->green()) * $intensity);
        $b = round($color->blue() + (255 - $color->blue()) * $intensity);

        return Rgb::fromString("rgb({$r}, {$g}, {$b})");
    }

    protected function renderLightShades(Hex $hex): void
    {
        $levels = [50, 100, 200, 300, 400];

        foreach ($levels as $level) {
            $color = $this->lighten($hex, $this->intensityMap[$level]);

            $rgb = "{$color->red()}, {$color->green()}, {$color->blue()}";

            $this->colors[$level] = $rgb;
        }
    }

    protected function renderDarkShades(Hex $hex): void
    {
        $levels = [600, 700, 800, 900];

        foreach ($levels as $level) {
            $color = $this->darken($hex, $this->intensityMap[$level]);

            $rgb = "{$color->red()}, {$color->green()}, {$color->blue()}";

            $this->colors[$level] = $rgb;
        }
    }

    protected function prefixRenderedColors(string $prefix): array
    {
        $colors = $this->colors;

        return array_combine(
            array_map(
                function($key) use ($prefix)
                { return $prefix . $key; },
                array_keys($this->colors)),
            $colors);
    }
}