It converts an RGB Int into a vector with R, G, and G color parts. It also does the same by inverting the R with G (this is needed for an internal project). And all of this in Kotlin

rgb-color-bitwise-conversion-kotlin.kt

import java.awt.Color
/**
 * Got from https://play.kotlinlang.org/#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
 */
fun main() {
    val rgb: Int = 0x1f8b54
    
    val rgbRedColor: Int = (rgb shr 16) and 0xFF
    val rgbGreenColor: Int = (rgb shr 8) and 0xFF
    val rgbBlueColor: Int = rgb and 0xFF
    
    val gbrRedColor: Int = rgb and 0xFF
    val gbrGreenColor: Int = (rgb shr 8) and 0xFF
    val gbrBlueColor: Int = (rgb shr 16) and 0xFF
    
    val gbr: Int = (rgbRedColor and 0xFF) or ((rgbGreenColor and 0xFF) shl 8) or ((rgbBlueColor and 0xFF) shl 16)
    
	println("RGB #${rgb.toString(16)}, $rgb ([r: $rgbRedColor, g: $rgbGreenColor, b: $rgbBlueColor])\nGBR #${gbr.toString(16)}, $gbr ([r: $gbrRedColor, g: $gbrGreenColor, b: $gbrBlueColor])")
}