I'm forever searching for these so thought it was about time that I created a list of Social Media Icons colours. The values are listed as Hex for use on the web.

Dribbble Hex: #ea4c89 
Facebook Hex: #3b5998 
Flickr Hex: #ff0084 
Google+ Hex: #dc4e41 
Instagram Hex: #517fa4 
LinkedIn Hex: #0077b5 
Medium Hex: #00ab6b 
Periscope Hex: #40a4c4 
Pinterest Hex: #bd081c 
Tumblr Hex: #35465c 
Twitter Hex: #55acee
Vimeo Hex: #1ab7ae 
YouTube Hex: #b31217