Black is known for going well with any other color, but it seem to combine especially well with red. If you are looking to add some color to your bedroom, an easy way to do it could be to get a red comforter. If you really want the red to pop, then combine it with some black to create a contrast. This works well in a room that uses fairly dark colors for the rest of its decor. Look for red and/or black rugs or picture frames to echo the bedding.
This set looks great to me… and it looks comfy too:
Red and black king size comforter set pictured: Silky Soft – Goose Down Alternative Reversible Comforter Set- Available In A Few Sizes And Colors , King, Black/Burgundy by Elegance Linen
If you are going for a vivid red, make sure the color will not fade when it is washed. A faded color will have a very different impact on the room’s overall tone. A darker red will usually have a more subtle effect on a room, but one that can still be very effective.