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swiftcolorsrgbhsvhsb

How to convert HSV(HSB) to range 0...1

I get HSB as 29, 90, 100. How to convert it to the range 0...1? UIColor is initialized only in this range, so I have a question.

let red: CGFloat = 1
let green: CGFloat = 0.5372
let blue: CGFloat = 0.0941


let hueOut = 29
let satOut = 90
let brightnessOut = 100


let color = UIColor(red: red, green: green, blue: blue, alpha: 1.0)

///r 1,0 g 0,537 b 0,094 a 1,0

let color2 = UIColor(hue: hueOut, saturation: satOut, brightness: brightnessOut, alpha: 1.0)

///r -9,0 g 0,0 b -3,0 a 1,0
Solution

  • Looks like your hue range is 0...360 and your saturation and brightness are 0...100. You just need to convert your integer to double and divide by 360 or 100:

    let color2 = UIColor(hue: Double(hueOut)/360, saturation: Double(satOut)/100, brightness: Double(brightnessOut)/100, alpha: 1.0)

    This will result in r 1.0 g 0.535 b 0.1 a 1.0