What are colors made by mixing equal amounts of one primary color with one of its adjacent secondary colors called?

When primary colors are mixed with adjacent secondary colors in equal amounts, the resulting hues are classified as tertiary colors. Tertiary colors emerge from this mixture because they are created by combining a primary color with a secondary color that is next to it on the color wheel. This process adds complexity to the color palette, resulting in shades such as red-orange or blue-green, which exhibit characteristics of both the primary and secondary colors involved in the mix.

Primary colors, on the other hand, are the foundational colors (red, blue, and yellow) that cannot be created by mixing other colors. Complementary colors are those that are opposite each other on the color wheel and typically create a high contrast when paired. Lastly, quaternary colors refer to colors that are created by mixing a primary color with a tertiary color, resulting in an even more complex color classification. Therefore, the term that specifically describes the mixture of a primary color with an adjacent secondary color is indeed tertiary colors.