What type of color is achieved by mixing a secondary color with its neighboring primary color?

The type of color achieved by mixing a secondary color with its neighboring primary color is called a tertiary color. Tertiary colors are created through the combination of one primary color and one secondary color that is adjacent to it on the color wheel. For example, mixing blue (a primary color) with green (a secondary color) produces blue-green, which is a tertiary color. This understanding is fundamental in color theory, as it helps in creating a broader spectrum of colors for hair dye formulations and artistic applications.

The other options do not fit this specific definition: quaternary colors are not typically referenced in basic color theory, neutral colors refer to combinations that produce gray or brown tones, and primary colors are the foundational colors from which all others are derived and are not a combination of other colors.