Light Green Yellow, Sea Green, Cobalt Green and Calamine BLue
Let Cobalt Green and Calamine BLue cover most of the surface, then bring in Sea Green as the deeper note and keep Light Green Yellow to a sliver. The four sit close in lightness, so the effect is soft and watery, like sea glass sorted on a windowsill or the patina on a copper roof. Use it for swimwear prints or a skincare range, and keep text off it, since none of these colors contrast enough to carry a sentence.