Color has long fascinated artists, designers, philosophers and makers of all stripes.

This note card set from artist Mimi Robinson contains six images illustrating the key principles of color theory and four different envelope designs.

All cards come with a detailed caption explaining the principle of color theory illustrated on the front of the card.

12 paper cards (6 designs; 2 cards per design), 6.25 × 5.25 inches + 12 envelopes (4 designs; 3 envelopes per design). Box measures 7 × 5.75 × 2 inches