A split-complementary color scheme is a variation of the complementary color scheme. It uses three colors: a base color, a split complementary color, and an accent color. The split complementary color is created by taking the base color and then choosing the two colors that are adjacent to its complementary color on the color wheel. The accent color is then chosen to provide contrast and balance.

Split-complementary color schemes are often used in interior design and fashion because they create a sense of harmony and balance while still providing visual interest. They can also be used to create a variety of different moods and atmospheres. For example, a split-complementary color scheme using cool colors can create a calming and relaxing effect, while a split-complementary color scheme using warm colors can create a more energetic and vibrant atmosphere.

Here is an example of a split-complementary color scheme:

* Base color: Blue

* Split complementary colors: Orange-red and yellow-green

* Accent color: Purple

This color scheme would create a sense of harmony and balance while still providing visual interest. The blue and orange-red colors would provide a strong contrast, while the yellow-green and purple colors would provide a sense of balance. This color scheme could be used to create a variety of different moods and atmospheres, depending on the specific shades of blue, orange-red, yellow-green, and purple that are used.