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cobalt blue

cobalt blue

5 3.7
A deep, bright blue color with a little green in it
  • noun
  • /ˈkoʊbɔlt blu/
translation icon : azul cobalto
  • The artist chose a vibrant cobalt blue for the sky in her painting.
  • cobalt blue sky
  • cobalt blue decoration
  • cobalt blue color

Examples

  • Cobalt blue wrought-iron posts guarded the windows, anticipating the very unlikely possibility of a break-in.

    Fiction book (1999)
  • The women looked up at a cobalt blue sky or shyly down.

    Fiction book (1998)
  • Just behind us was the deep cobalt blue of the pool the women of the sultan had once enjoyed.

    Fiction book (1990)
  • My living room and dining room are both done in combinations of this green and cobalt blue.

    Blog text (8)
  • A bathing beauty sits on the beach under a cobalt blue sky.

    Fiction book (1991)
  • The soft waving cobalt blue disappeared on the horizon.

    Fiction book (1992)
  • Approached along the main road from the historic city, the hall's cobalt blue exterior has a temporal, ghostly quality.

    Blog text (31)
  • The captain and the science officers stare through the plexi-dome and out into the freezing, cobalt blue of the Palawan Trough.

    Fiction book (1998)
  • Art patrons enjoyed beautiful things: manicured gardens, cobalt blue, celadon and crackled glaze porcelains, carved lacquers, antiques, and beautiful people.

    Academic text (1996)
  • She wore a stunning cobalt blue dress that caught everyone's attention at the party.

Synonyms

turquoise
vscobalt blue
26 3.7

A green-blue color like the water in a tropical sea

is more purely blue and darker with slight green
aqua
vscobalt blue
16 2.3

A light bluish-green color like sea water

is darker and more saturated with just a slight green
cerulean
vscobalt blue
3 8.8

A deep blue color like a clear bright sky

is darker, more vivid, and has a slight green tint
aquamarine
vscobalt blue
3 4.6

A pale blue-green color like the sea

is much deeper and richer with only a faint greenish hint
powder blue
vscobalt blue
2 3.7

A pale blue color with a slight grey tint

is deeper and more vivid with a mild greenish cast
Prussian blue
vscobalt blue
1 7.4

A dark blue color with a little green that artists use for painting

is more vivid and slightly greener in overall appearance
ultramarine
vscobalt blue
1 7.6

A bright deep blue color used in paint

is greener and deeper rather than purplish or bright
greenish blue
vscobalt blue
1 2.5

A blue color with a little green in it

is similar but shows only a subtle green tinge
peacock blue
vscobalt blue
1 3.8

A bright blue color with a green tint like a peacock's feathers

is deep and vivid but less bright with milder green
cerulean blue
vscobalt blue
  • Specialized
1 8.6

A light greenish-blue paint color often used for skies or seas

is deeper and more intense with only a faint green
blue green
vscobalt blue
1 1.6

A color that is a mix of blue and green

leans more toward deep vivid blue with light green touch
cobalt ultramarine
vscobalt blue
  • Specialized
8.6

A greenish-blue color used in paint and pottery made from cobalt

is a deep vivid blue with only a slight greenish tint

How Blue

navy blue
15 1.0
ultramarine
1 7.9
cobalt blue
5 3.7
azure
1 5.8
sky-blue
1 1.8

Surface Forms

cobalt blue singular
cobalt blues plural

Morphology

cobalt + blue

This is a compositional color name: knowing 'cobalt' (the metal/pigment source) and 'blue' lets a learner infer it denotes a shade of blue associated with cobalt. Color-naming by material or source is a common, predictable pattern across languages, so a B1 learner who knows both words can reliably understand the meaning.

Etymology

Cobalt blue is named after the metal cobalt. Old miners called a tricky ore 'kobold' (a 'goblin'), and when artists made a bright blue pigment from cobalt, the metal's name became the name of the deep 'blue' we use today.