The gulfs in which they floated were black blue with profundity.

His black blue eyes were set as carefully in their lids as a woman's.

Five dragons manifested in a half circle, summoned through the void, white black blue yellow red.

The usual golden black blue colour of the sky was gone, and had been replaced by a dull gloomy grey.

In the depths of the horizon it must be almost dark blue, different from the black blue in the depths of the sky.