HSBK Interpretation?

[autolog]

Is there documentation available on how to interpret the HSBK values in relation to say the iOS app?

For example, when in colour mode, when I set the wheel to 50% in the iOS app, the B value is coming back as 100% (0xFFFF). Increasing the wheel to 75% leaves the B value at 100% and decreases the saturation value. I was just wondering if there is an algorithm documented as to how the iOS app decides how to interpret the wheel values and what HSBK values to set?

[tatey]

Internally we've been referring to this behaviour as intensity. When adjusting the ball slider on the colour wheel you're adjusting the intensity of the colour which is a combination of brightness and saturation. After 50% intensity we linearly decrease saturation while continuing to increase brightness. On iOS the minimum saturation is 20%. This behaviour only applies to colour and may change in a future release of our apps.

Example:

• 0% intensity = 100% saturation, 0% brightness
• 50% intensity = 100% saturation, 100% brightness
• 100% intensity = 20% saturation, 100% brightness

[autolog]

Thanks - that is very helpful :+1: