| Rating | Solver | Clue |
|---|---|---|
| WOAD | Blue dye | |
| INDIGO | Blue vat dye | |
| PASTEL | A plant affording a blue dye; the woad (Isatis tinctoria); also, the dye itself. | |
| AZURE | The clear blue color of the sky; also, a pigment or dye of this color. | |
| BLUE | To make blue; to dye of a blue color; to make blue by heating, as metals, etc. | |
| ISATIS | A genus of herbs, some species of which, especially the Isatis tinctoria, yield a blue dye similar to indigo; woad. | |