Are you asking what makes a primary color a primary color? Primary colors are selected such that when you mix them in different ways, you get a sufficiently large range of other colors. But there’s no rule about how to select primary colors. Many different sets of primary colors are possible. The primary colors we choose have a lot to do with engineering realities, like the costs of different pigments, dyes, and light-emitting devices.
Also, primary colors *can* be created by the mixture of different colors.
Are you asking what makes a primary color a primary color? Primary colors are selected such that when you mix them in different ways, you get a sufficiently large range of other colors. But there’s no rule about how to select primary colors. Many different sets of primary colors are possible. The primary colors we choose have a lot to do with engineering realities, like the costs of different pigments, dyes, and light-emitting devices.
Also, primary colors *can* be created by the mixture of different colors.
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