Perceptually uniform color spaces
Why do we need perceptually uniform color spaces? Because working with color in code is different than working with color in traditional design tools. Traditional tools encourage designers to think in manual workflows with the color picker as the primary way of choosing color combinations. In this scenario, designers use their eyes to decide whether a color is right or wrong, and the RGB values play no role in this decision. Code is different, because programming languages encourage designers to think about colors as numbers or positions within the chosen color model. This skill is hard to learn if the numbers do not correspond with the output. Perceptually uniform color spaces allow us to align numbers in our code with the visual effect perceived in our viewers.
via https://programmingdesignsystems.com/color/perceptually-uniform-color-spaces/