"Selectable Color" is a color adjustment command in Adobe Photoshop. But compared with color levels, color balance and hue saturation, it is not so intuitive, so people often encounter color selection and it is not so smooth. I also checked the tutorials on color selection on the Internet, but Basically, they are all based on examples. Once the parameters are adjusted, it will be OK once you adjust them. But when you really want to adjust other pictures, you don’t know where to start. Or the effect is not satisfactory and you simply abandon this very useful color correction tool!
Here I will briefly explain to beginners how to adjust optional colors well. Now let’s get into the topic of optional colors: If you really want to make good use of optional colors, you should first learn more about the basics of color. Otherwise, you’re still confused!
The above picture shows the relationship between the three primary colors of RGB and their corresponding colors (helping to understand the optional colors). Next: we draw the following graphics in PS (the mixing mode of the green and blue layers is changed to screen color):
At this time we open the optional color adjustment dialog box (Image > Adjustment > Optional Color), first adjust the red color:
