Definition of blue-black in English:

blue-black

adjective

  • Black with a tinge of blue.

    ‘the perfect dome of blue-black sky’
    • ‘A few wisps of cloud remained, but now the sky was inky blue-black, with a sparkle of stars.’
    • ‘Dark clouds were gathering on the horizon, a grayish-purple that barely stood out against the blue-black of the night sky.’
    • ‘She had wavy blue-black hair, and surprisingly royal blue eyes.’
    • ‘The blue-black tongue, the bluer the better, bespeaks a sweeter meat; and a straight hind leg yields more meat.’
    • ‘I was pretty good at drawing diagrams of leaves and stuff, and I liked dropping iodine onto things that contained starch and watching them turn blue-black, but not much else.’
    • ‘Graham calls it blue-black, but it looks about as close to black as I've ever seen a flower.’
    • ‘Her hair was black and straight instead of the blue-black ringlets he remembered.’
    • ‘The blue glow dulled to blue-black, pulsing like a bruise, an open sore on the solar system.’
    • ‘I appear to have dyed my hair a rather frightening blue-black…’
    • ‘It shifts to darkest blue-black and fades to a lighter, almost periwinkle blue.’
    • ‘The sky was clear and blue-black, with the layer of clouds below blocking any chance of seeing the ocean at the cruising altitude.’
    • ‘His hair was short and wavy, and oh, so black, a true blue-black, such as Pamela had rarely seen before.’
    • ‘No dragons even graced the plain that night, it was dead silent, the silver moon still in the blue-black, star-studded sky.’
    • ‘Over my shoulder a blue-black storm built in the east.’
    • ‘The body of humpback whales is usually blue-black or black overall with irregular white coloration on the throat and sides.’
    • ‘The thinner outer branches catch, singing the brown and green bark to blue-black ash, coiling the leaves into wilted cigars.’
    • ‘I stared at the stars, twinkling white against a blue-black night sky.’
    • ‘The drupes are metallic blue that later turn blue-black to black and ripen in October.’
    • ‘Most impressive when in flower, the strongly fragrant golden spikes shine like beacons across the winter garden, followed by clusters of blue-black berries.’
    • ‘Here the funeral procession, muted in blue-black as it is, nonetheless has the same kind of psychological and aesthetic impact.’