Jujube red, also known as persimmon red, is a deep red color reminiscent of the hue of a ripe jujube fruit. In design, page color matching involves selecting colors that complement each other for visual appeal. This can include color harmony, contrast, and readability. When using jujube red, it's important to consider complementary colors for contrast and balance. The knowledge of color theory, such as the color wheel and color schemes, is essential for effective page color coordination.