The split complementary scheme is similar to the complementary scheme, but instead of using the colour directly opposite, it uses the two colours on either side. This creates a softer, more harmonious colour scheme than the straight complementary, with less tension as it is not as extreme.
Suz used the SEI Corinne papers which fit this scheme perfectly. Nearly opposite each other, the red and blue is softened by the adjacent softer red and and orange, which still offers a great contrast but isn’t so harsh.
Split complementary colours are one off from the opposite colour. Pick a colour, find it's complementary colour (the opposite on a colour wheel), then select the two colours on either side of the complementary colour. Jane Clark loved using this colour scheme with bright colours!!