UIColor extension for creating UIColor with rgba() values

UIColorExtensions.swift

import UIKit

extension UIColor {
    static func rgba(_ r: CGFloat, _ g: CGFloat, _ b: CGFloat, _ a: CGFloat) -> UIColor {
        return UIColor(red: r / 255.0, green: g / 255.0, blue: b / 255.0, alpha: a)
    }

    static var lightBackground: UIColor { return .rgba(246, 246, 246, 1) }
    static var text: UIColor { return .rgba(51, 51, 51, 1) }
}