Why is Lord Krishna depicted in blue colour?

There are many legends associated with Lord Krishna and the blue skin colour. Let’s read some.
 

Krishna’s skin appeared light blue after being poisoned by the demoness Putana, which contributed to his blue skin.
 

As per religious beliefs, the venom of the serpent Kaliya Naga, which Krishna subdued, also influenced the blue colouration attributed to him.
 

The blue colour symbolizes Krishna's divine and infinite nature rather than his actual skin colour.
 

Lord Vishnu, Krishna’s divine source, is called Neelvarna, meaning "blue-coloured," reflecting the divine essence rather than a literal skin colour.
 

The use of blue in depictions of Krishna and Vishnu is a symbolic choice in art to convey their supernatural and transcendent qualities.
 

Krishna’s blue skin is often linked to significant mythological events and his role as a divine protector and saviour. 
 

The colour blue is used to signify the divine and infinite qualities of Krishna and Vishnu, distinguishing them from mortal beings.