Definition of cobalt blue in US English:

cobalt blue

noun

  • 1A deep blue pigment containing cobalt and aluminum oxides.

    • ‘He mixes and grinds his own pigments, preferring rich, heavy metal colours such as cobalt blue and the cadmiums - red, violet, vermilion and yellow.’
    • ‘The next step is to paint some winter weeds around her, and put a nice wet wash of burnt umber and cobalt blue over the wet ground of her body.’
    1. 1.1 A deep blue color.
      • ‘It is almost impossible to avoid the gaze of the distinctive cobalt blue traffic cameras that are springing up along trunk routes.’
      • ‘He looked up at the cobalt blue of his mothers eyes.’
      • ‘She plucked a large, cobalt-blue flower and tucked it behind her ear.’
      • ‘The sea reflected our good fortune in hues of glassy green, turquoise and cobalt blue and into this unearthly vision we quietly launched our sailing barque.’
      • ‘The next morning broke with the chatter of a half-dozen cobalt-blue hyacinth macaws, the world's largest parrots.’
      • ‘It is a beautiful day too, the sky a vivid cobalt blue, the sun warm and energising.’
      • ‘Low sitting tables, strewn with crimson rose petals and cobalt blue sequence beads welcome guests to dinner.’
      • ‘Cows and goats grazing under cobalt blue skies.’
      • ‘Her little dragon was cobalt blue with a grey spot on his muzzle, an adorable and shiny little fellow.’
      • ‘They left us as the cobalt blue waters of the deep changed to aquamarine above the massed reefs of coral.’
      • ‘We dropped off the boat into water of a deep cobalt blue, with depths clearly in excess of 30m.’
      • ‘Groundcover plantings of smoky mauve heathers come alive in spring with surrounding sweeps of cobalt blue grape hyacinths.’
      • ‘Did you know that these jeans were not just blue, but cobalt blue?’
      • ‘Now the storm had passed, the sky was a pure cobalt blue with a white sun and the world was as clean as a blank sheet of paper.’
      • ‘Beyond him, the window framed a snowscape: a treeline with white-washed evergreens and a cobalt-blue sky overhead.’
      • ‘I can't wait to hang up my cobalt blue shower curtain with the gold stars.’
      • ‘It wasn't even a subtle, navy blue, or a blue mixed in slightly with another color, it was a deep, brilliant cobalt blue.’
      • ‘Its tiny, bell-shaped, cobalt-blue flowers, each with a very delicate white border, form a compact cluster.’
      • ‘He was a tall, stern-looking man with cobalt-blue eyes and raven-black hair pulled snugly back.’
      • ‘Primary colours are a big blast from the past, especially cobalt blue and fuchsia pink.’
      sky-blue, azure, cobalt, cobalt blue, sapphire, cerulean, navy, navy blue, saxe, saxe blue, oxford blue, cambridge blue, ultramarine, lapis lazuli, indigo, aquamarine, turquoise, teal, teal blue, cyan, of the colour of the sky, of the colour of the sea
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Pronunciation

cobalt blue

/ˈˌkōˌbôlt ˈblo͞o/