A triadic colour scheme is used in this illustration, the colours blue, purple and orange that are evenly spaced around the colour wheel. Triadic colour harmonies tend to be quite vibrant, even if you use pale or unsaturated versions of your hues.
she closed the book, having finished the last chapter. polaris had given it to her for christmas, even though she refused to receive any gifts. he insisted. it was his favorite book, and now it was hers too.