Mixing the colors red and blue gives you maroon; a deep, dark, reddish brown color. Start with the red as a base and mix in the blue incrementally while gauging the depth of the color. Depending on the proportions, the result is either a bluish red or a reddish purple.
Maroon is part of both the red and the blue color palettes and thus takes on the attributes of both. As a warm red that includes burgundy, crimson and scarlet, it is fiery and exciting, full of passion and vitality. As a cool blue at one with the cobalt, navy and sapphire, it is soothing and peaceful, offering tranquility and strength.