Split Complementary Color
Split complementary color schemes are based on the complementary color scheme, but instead of the exact opposite color, the two adjacent are used. This scheme still provides the natural contrast of the complimentary version, but because of the third color, it generally results in a more harmonious design. Because of this, the split complementary scheme is great for beginners.
Rectangular (tetradic) Color
The rectangular color scheme is also based on the complementary color scheme, using two complementary pairs together. This allows for many possibilities in terms of your design, but the balance between the warm and cool tones is integral to making this scheme look good. As with most color schemes, using one color as the dominant, and the rest as accents is best.
Although the square color scheme is similar to the one above, the colours are actually evenly spaced around the colour wheel. With this scheme, it is even more important to use one colour as the dominant, and the other 3 as accents. Due to its extreme nature, using all 4 colours equally can quickly make your design look flashy and overdone. Keeping in mind the balance between warm and cool tones will also help ensure your