Definition of bright blue Bright blue

We found 2 definitions of bright blue from 2 different sources.

What does bright blue mean?

Adjective
bright blue - of a deep somewhat purplish blue color similar to that of a clear October sky; "October's bright blue weather"
		azure, cerulean, sky-blue
		chromatic being or having or characterized by hue

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bright blue
The colour of the clear sky or the deep sea, between green and violet in the visible spectrum, and one of the primary additive colours for transmitted light; the colour obtained by subtracting red and green from white light using magenta and cyan filters.