Abstract: A palette case is provided with a gasket and magnets to create a controlled humidity environment for the temporary storage of wet paints and other materials on a palette. First and second case portions form an enclosure for storage of the palette when the case is closed. A gasket is disposed between the first and second case portions around the entire periphery of the enclosure, and two magnets, or a magnet and ferric metal, are disposed on the first and second case portions, respectively, around the periphery of the enclosure. The case may be provided with one or more storage compartments for brushes, paint tubes, and other supplies. These storage compartments are covered by the stored palette.