Question

I’m trying to generate a color that could highlight an item as “selected” based on the color of the current object. I’ve tried increasing some of the HSB values, but I can’t come up with a generalized formula. Particularly, I have problems when working with white (a brighter white doesn’t look much different than a regular white). There’s no requirement that says I need to make it brighter, so some sort of “inverse” color would work well too. Are there any standard algorithms or techniques for doing something like this (I’m guessing yes, but I couldn’t find any — I’m not sure if there’s a name for this)?

thanks,

Jeff

Answer 1

Maybe the negatif effect:

pseudo:

int red = originalColor.red
int green = originalColor.green
int blue = originalColor.blue

int newRed = 255 - red
int newGreen = 255 - green
int newBlue = 255 - blue

Color negativeColor = new Color(newRed, newGreen, newBlue)

Or adding a blue color-effect:

int red = originalColor.red
int green = originalColor.green
int blue = originalColor.blue

int newRed = 255 - red
int newGreen = 255 - green
int newBlue = 255 - blue + 100
if newBlue > 255 {
   newBlue = 255
   newRed = newRed - 50
   newGreen = newGreen - 50
   if newRed < 0 {newRed = 0}
   if newGreen < 0 {newGreen = 0}
}

Color negativeColor = new Color(newRed, newGreen, newBlue)