Mix red and yellow to create orange. Orange is a secondary color.
Mix yellow and blue to create green. Green is a secondary color.
Mix blue and red to make purple. Purple is a secondary color.
Mix yellow and green to create yellow green or chartreuse. Chartreuse is a tertiary color.
Mix blue and green to create blue green or aquamarine or turquoise. Aquamarine or turquoise are tertiary colors.
Mix blue and purple to create blue purple or violet. Violet is a tertiary color.
Mix red and purple together to create red purple or magenta. Magenta is a tertiary color.
Mix red and orange together to create red orange or vermilion. Vermilion is a tertiary color.
Mix yellow and orange to together to create yellow orange or marigold. Marigold is a tertiary color.
Mix red and green to create brown. You can add white or black to the brown to make it darker or lighter.
Mix white with a color to create a tint. For example, mix white with red to create pink.
Mix black with a color to create a shade. For example, mix black with red to create burgundy.
To create a less intense color, mix in a little bit of its complement (the color opposite it on the color wheel). Red's compliment is green. Blue's compliment is orange. Yellow's compliment in purple. You can create a dull and muddy rust orange color by mixing in a little bit of blue.