Red, yellow, and blue are the three primary colors, but you’ll only need red and yellow to create orange. “Secondary” colors are made by combining two primary colors. Since you need to combine red and yellow to make orange, orange is considered a secondary color.
What colors do you mix to make a bright orange?
To get a beautiful juicy orange, use a warm yellow and a warm red, such as Hansa Yellow Medium and a scarlet or vermillion. If you use cool yellows or reds (shades that lean blue/green or pink) such as a lemon yellow or a crimson, you’ll get duller oranges.