1. Pick your color

Input the target color with HEX code or color picker.

2. Adjust location of render

Change X and Y coordinates and size of target point on your render image. This area will be used to for color matching.

3. Select color to Change

Right click on the color property of material or compositor node you wish to change. Select Assign to Color Match option in the menu.

4. Run Color Match

The process will render a small part of your image multiple times and optimize the color in that area to match your target color as close as possible.

The algorithm behind Color Match is based on gradient descent, a method of finding the minimum difference from a given value. The process will render a small part of your image and calculate the error between the desired color and the actual color. Each iteration will adjust the RGB values to minimize the error.

You can control the size of the step taken in each iteration by adjusting the Step Size value. A smaller step size will result in a more precise movement, but will take longer to converge. Too large of a step size could result in the algorithm overshooting the minimum and oscillating around the desired color.