source: database/seeds/CategoriesTableSeeder.php

<?php

use Carbon\Carbon;
use Illuminate\Database\Seeder;

class CategoriesTableSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        DB::table('categories')->insert([
            [
                "name" => "Videos",
                "color" => "#4ed8cf",
                "created_at" => Carbon::now()->format('Y-m-d H:i:s'),
            ],
            [
                "name" => "Cars",
                "color" => "#39a0ed",
                "created_at" => Carbon::now()->format('Y-m-d H:i:s'),
            ],
            [
                "name" => "Mobile",
                "color" => "#e7a300",
                "created_at" => Carbon::now()->format('Y-m-d H:i:s'),
            ],
            [
                "name" => "Computers",
                "color" => "#fb3640",
                "created_at" => Carbon::now()->format('Y-m-d H:i:s'),
            ],
        ]);
    }
}