Claude has been asked to help design a logo and mascot for a new elementary school. He knows that he needs to keep it simple so he wants to use only two colors and make sure they have contrast so they will really pop based on the color wheel which colors would be the best choice.

Based on the color wheel, the best choice for creating contrast and making the logo and mascot pop would be to choose complementary colors. Complementary colors are opposite each other on the color wheel and provide the highest contrast.

Some possible combinations of complementary colors that Claude could consider are:
1. Blue and orange
2. Purple and yellow
3. Red and green

These combinations would create a strong visual impact and make the logo and mascot stand out effectively with only two colors.