Apple Developer Documentation

How to convert CGColor to UIColor?

let uiColor = UIColor(cgColor: cgColor)

Color Literal

let colorLiteral = colormodal input hex and drag
// 복사해보면 rgb + alpha값이 float 타입으로 들어가 있음

UIColor to hex

How to convert UIColor to HEX and display in NSLog

From Hex to UIColor and Back in Swift

• 디자이너는 hex 칼라로 전달해주는데 uicolor는 기본적으로 지원을 안해줌
• init, convert 함수를 직접 구현해야 함 (링크 참고)

어떻게 뷰의 특정 위치의 color값을 가져올 수 있을까?

https://gist.github.com/mbanasiewicz/940677042f5f293caf57

두 색 사이에서 비율에 따라 중간 색가져오기

<aside> 💡 xcode get color between gradient

</aside>

https://stackoverflow.com/questions/15032562/ios-find-color-at-point-between-two-colors

extension UIColor {
    func toColor(_ color: UIColor, percentage: CGFloat) -> UIColor {
        let percentage = max(min(percentage, 100), 0) / 100
        switch percentage {
        case 0: return self
        case 1: return color
        default:
            var (r1, g1, b1, a1): (CGFloat, CGFloat, CGFloat, CGFloat) = (0, 0, 0, 0)
            var (r2, g2, b2, a2): (CGFloat, CGFloat, CGFloat, CGFloat) = (0, 0, 0, 0)
            guard self.getRed(&r1, green: &g1, blue: &b1, alpha: &a1) else { return self }
            guard color.getRed(&r2, green: &g2, blue: &b2, alpha: &a2) else { return self }

            return UIColor(red: CGFloat(r1 + (r2 - r1) * percentage),
                           green: CGFloat(g1 + (g2 - g1) * percentage),
                           blue: CGFloat(b1 + (b2 - b1) * percentage),
                           alpha: CGFloat(a1 + (a2 - a1) * percentage))
        }
    }
}

//Usage
let colorRed = UIColor.red
let colorBlue = UIColor.blue

let colorOutput = colorRed.toColor(colorBlue, percentage: 50)