I am obsessed with colours that are hard to define - those in the blue/green range especially. And then putting those with pink/red really works for me. I'm constantly torn between loving very colourful spaces and also loving light. I find this particular combination both soothing and interesting to the eye.
Colors used in my room:
Main colour is Farrow & Ball Teresa's Green The sofa is indeed Ikea in Idemo Red The blinds were made to order. The cushions are (I think I remember correctly) Colefax & Fowler Highlights are in the raspberry - red range range collected over the years. The quilt over the chair is from The French House (don't think they sell them anymore) - it's a lovely old washed out raspberry. The Moroccan leather pouffe is from Graham & Green. The painting was bought long before the room was painted. I love teaming a cool colour with something a little bit hotter.
Tips for using color successfully:
Firstly choose colours you love, you're probably going to be living with them for a while.
Then use large tester areas to check they work with the light in the room & in the size of room.
Thirdly - don't worry too much about everything 'going together' if you do that you could end up living in a soul-less show home.