How do you know that which hex code prints out he right color

Question

hex codes

Answer 1

https://code.sololearn.com/Wzp6EV41W471/?ref=app
https://code.sololearn.com/WwK3p6OsT1J2/?ref=app
https://code.sololearn.com/W5GHqNzDaCFj/?ref=app
https://code.sololearn.com/WiZ8WsR2Q3J1/?ref=app
https://code.sololearn.com/W0nLEaXJOjKt/?ref=app
https://code.sololearn.com/WUkER81JZBFX/?ref=app

Answer 2

hex to rgb converter:
https://code.sololearn.com/WVKr81W0qUON/?ref=app

RGB color changer:
https://code.sololearn.com/Wo8YOwF9J109/?ref=app

Answer 3

Just google CSS colors, then bookmark it, no one knows all the 16 million color mixtures