いろかるた (Color Karuta)

いろかるた (Color Karuta) is a color-building game in which players take transparent cards in five colors (CMYK and white) and overlay them in an attempt to recreate a color presented to them by an opponent or a color on an object in real life. The order in which you stack the cards matters, so build with care!

The game includes Ukiyo-e postcards that can serve as targets to match in color should you not have anything else appropriate within reach.
user summary

This is a game to create colors by combining transparent color cards.
透ける色カードを組み合わせて色をつくって遊ぶゲーム
publisher's summary