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.
Still on my way to visit my little bro. Almost there, it’s a trip but Lopi has been incredible and has been driving the whole way so I’ve filled many sketchbook pages. Here’s one quickie sketch of I tried not erasing as much as.