gentian blue; salvia blue
A deep, vivid blue-purple color named after the gentian flower (竜胆). Used in traditional Japanese color contexts.
Her kimono was a beautiful gentian blue.
Compound of 竜胆 (りんどう, 'gentian') + 色 (いろ, 'color'). The color is named after the vivid blue-purple of the gentian flower.