What is the complementary color in photoshop? What does this picture mean?

First, the significance of complementary colors in photoshop:

In optics, when two colors of light are mixed in a proper proportion to produce white light, the two colors are called "complementary colors". In the color circle of photoshop, 180 degrees of one color corresponds to other colors, which are complementary colors and the strongest contrast colors.

The dialog box opened by the "Color Balance" command in photoshop will visually display three groups of complementary colors: red cyan, magenta green and yellow blue. These three groups of complementary colors can be mixed together in a proper proportion to produce white light, such as: red+cyan = white, green+magenta = white, blue+yellow = white, which means cyan, yellow and magenta are complementary colors of red, blue and green respectively.

Second, this picture is the hue diagram of color:

The two colors represented by each dotted line in the figure are complementary colors; The three colors connected by three solid lines are additive secondary colors, that is, yellow, cyan and magenta are all mixed by two colors and tones. The three colors connected by the other three solid lines are additive mixed colors, that is, the three primary colors of red, green and blue are added in different proportions to form mixed colors.

Extended data

The function of complementary color:

1, if the complementary colors are in harmony with each other, the color purity will decrease and become gray.

2. When two complementary colors are juxtaposed, it will cause a strong sense of contrasting colors. For example, putting red and cyan together will make people feel that red is redder and blue is greener.

3. When one of the complementary colors occupies a much larger area than the other, it can enhance the contrast of the picture and make it eye-catching.

Baidu encyclopedia-complementary color