| Rating | Solver | Clue |
|---|---|---|
| ULTRAVIOLET | Purple light | |
| LAVENDER | Light purple | |
| LILAC | Light purple | |
| MAUVE | Light purple | |
| OPTOGRAM | An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See Optography. | |
| PHOTOCHEMICAL | Of or pertaining to chemical action of light, or produced by it; as, the photochemical changes of the visual purple of the retina. | |
| OPTOGRAPHY | The production of an optogram on the retina by the photochemical action of light on the visual purple; the fixation of an image in the eye. The... | |