It's not. Water is clear and transparent. The reason that some waters are blue, such as the sea, is due to reflection
The bluish purple color is often referred to as "indigo." It is a deep, dark shade that falls between blue and purple on the color spectrum.
The color of solid iodine is a dark purple.
Ferrous sulphate typically appears as a pale green or bluish-green colored powder or solid.
Copper selenate is typically white in color when in its anhydrous form, but it can appear blue or green when hydrated.
Zinc is silvery white in color when solid metal, while as an ion (zn2+) its color is white!Like other metals it is silver in color, but sometimes it becomes white due to the formation of Zinc oxide (formed in the reaction of zinc with oxygen in the air)
It is a bluish colour
Water is blue because it reflects that wavelength of light.
brownish, bluish colour
bluish grey
It is like a bluish color
Greenish-bluish
brownish, bluish colour
Teal is often described as a bluish green or a greenish blue. Torquoise
Nilgai
uranus is bluish green in colour
Bluish black! INK
Aquamarine is a gemstone and a colour of pale bluish green.