Official Sites:
Official Homepage
Rainbow Facebook
Rainbow Twitter
Rainbow Fan Cafe
Rainbow Official Google+
Rainbow Youtube Channel
DSPmedia Youtube Channel
Twitter:
Jaekyung - @JaeKyung_K
Seunga - @Seunga0913
Hyunyoung - @Hyunyoung_C
Woori - @nunino
Noeul - @No_Eul
Jisook - @Jisook718
Yoonhye - @Yoonhye90
Instagram:
Jaekyung - https://www.instagram.com/_kimjaekyung_/
Seunga - https://www.instagram.com/snowmanloveu/
Hyunyoung - https://www.instagram.com/cho_hyunyoung/
Woori - https://www.instagram.com/rainbowoori/
Noeul - https://www.instagram.com/rb.noeul/
Jisook - https://www.instagram.com/jisook718/
Yoonhye - https://www.instagram.com/yoonhye.chung/
Jisook's Blog - http://blog.naver.com/comingsook
Fansites:
http://colorful-princesses.tumblr.com
http://visualglow.com
https://www.reddit.com/r/Rainnous/
Japanese:
Universal Music Official Homepage
Rainbow Japan Official Fanclub
Rainbow Japan Official Blog