A tertiary color mixes one primary color with an adjacent color on the color wheel. These in-between colors include red-orange (amber) and blue-green (teal). section 9.2.1
The color wheel helps identify tertiary colors and understand how they relate to primary and secondary colors when building a palette. section 9.2.1
Reading the color wheel
Locate a primary color, then move to a neighboring color on the wheel. Mixing the two produces a tertiary color such as red-orange or blue-green. section 9.2.1
Use the color-wheel figure to compare the positions of primary, secondary, and tertiary colors. section 9.2.1
