ultramarine

/ˌʌltrəməˈrin/
noun
  1. A bright blue pigment or color, originally made from the mineral lapis lazuli.
    • Ultramarine was once more expensive than gold because it came from rare stones.
    • She mixed ultramarine with white to create a soft pastel blue.
    • The artist used ultramarine to paint the sky in the portrait.
adjective
  1. Of a bright blue color like the pigment ultramarine.
    • The ultramarine dress stood out at the party.
    • The butterfly's wings had an ultramarine glow in the sunlight.
    • He painted the door an ultramarine shade that matched the ocean.