Blue is the color of many things in the nature; sometimes it's seen as a feather of a bird's wing, sometimes it's the blue of a flower, water, sky, moon and uncountable things.
It has many shades; Water blue, Azure, Cobalt blue, Aesthetic blue, Turquoise and many more.
Blue is the color of healing power of God according to Bible. Maybe Blue is God's secret spell put by him on the chosen things.
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