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Continuing with The Color Wheel, let's take a further look into adjacent colors - what we are referring to by that and what that means.
Adjacent colors are two or more colors sitting next to each other on the wheel. These are colors with similarities and overlaps as they are more the same the closer they are. Their differences become more significant and notable the further apart they are. E.g. Orange slightly inching toward yellow gains a yellowish tint and orange further approaching yellow may become more yellow than it is orange.
When coloring, if you're afraid to take risks or make leaps, you could try sticking with a selection of adjacent colors so there won't be much conflict or noise between them. And while that's playing it safe, it won't necessarily be boring. Besides, it may be what is more suited for a given project or mission. Temperature in Colors, for example, is composed of adjacent colors.
Many artists make adjacent colors their trademark. They may stick with colors such as purple and those adjacent to it for all that they create. Or at least make them predominant in what they do.
Depending on your preferences, the impression and impact you aim to make, and the meanings you aspire to convey, you could decide on a set of adjacent colors, whether closely tied together or wider apart, as your go-to palette. Or switch them up as you go.
