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.
of a deep somewhat purplish blue color similar to that of a clear October sky; "October's bright blue weather"
of a deep somewhat purplish blue color similar to that of a clear October sky; "October''s bright blue weather"
of a deep somewhat purplish blue color similar to that of a clear October sky
