Adjust the RGB sliders and watch the HSV variables and the color change. With pen, and with the costume editor, you enter the color (hue), saturation, and brightness (value). However, computers run on RGB, some combination of red, green, and blue which can make all the colors you see on your screen. Thus, I wanted to make this project, thinking it was useful. I found the math for it online and implemented it. Ironically, somewhere behind the scenes of Scratch the HSV values are converted back to RGB values for the screen. The vales on the exactly match the costume editor, so you can enter any RGB values and get the color for your sprite with this.
