Hi there, This is the 1st chapter for my html code book. I will start with colours and for the blue colours you can use the codes I have given down there.

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Blue Midnight blue: #151B54

Navy blue: #000080

Blue whale: #342D7E

Earth blue: #0000A0

Cobalt blue: #0020C2

Blue eyes: #1569C7

Blue orchid: #1F45FC

Blue lotus: #6960EC

Windows blue: #357EC7

Silk blue: #488AC7

Light steel blue: #728FCE

Blue ivy: #3090C7

Glacial blue ice: #368BC1

Blue koi: #659EC7

Columbia blue: #87AFC7