Triadic

Monochromatic

Analogous

Complementary

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Blue is the colour that absorbs all other colours and does not reflect any of those colours. 

So, it produces a shade of black as no other colour is reflected. 

This quality of experiencing total absorption of all energy is the exact quality that is required to attain nirvana in Buddhism.

Yinmn blue color is in the darker hue, in the front of the water absorption of yellow. Dark blue pigment mixed with white will become light marine cool light gray. 

Pure water into light blue, because it contains a large amount of oxygen. 

Mixed with other pigments and dyes will become bright blue color; add some white into a lighter blue.