A colour intermediate between blue and green; a pigment of this colour.

A pale shade of blue.

a cobalt blue colour of any of various shades of light and dark; a pigment of this colour; a dye, paint, etc., made from this pigment.

the colour (originally pale, now dark blue) of the ribbon worn by Knights of the Garter.

The rich blue colour of smalt. Cf. powder blue, n. 2a.

a blue dye obtained from indigo, used for painting in parts of a design; (also) the process in which this dye is used.

The blue colour of this, or a dress of this colour. (Cf. powder blue, n. 2a.)

A particular shade of blue.

A dark blue synthetic dye which retains its colour under artificial light. Now rare.

Any of various shades of blue or green resembling those prominent in the plumage of certain breeds of duck. Also more fully canard blue, canard green…

In names of minerals and their attributes. a tint of blue like that reflected from labradorite; often attributive; cf. Labrador spar n. at sense 2d.

An electric shade used esp. as a fabric colour; (probably) spec. = electric blue adj. n. at compounds 1b. Cf. sense A. 5.

a shade of blue resembling that of the uniform of a French chasseur.

The name given to various plants commonly found growing amongst corn; spec. The blue colour of the cornflower: a fashion shade. Also attributive.

= sense 4.

The blue colour characteristic of the larkspur.

A shade of blue likened to the colour of petrol.

a blue colour applied to pottery or porcelain which diffuses readily through the glaze.