Cyan is a bright greenish-blue hue that serves as one of the four primary colors in one of the systems used for digital displays, along with black, magenta and yellow. This pure aqua derives its name from Prussian blue, a pigment that contains cyanide. It falls exactly halfway between blue and green on the color wheel. Decorating your home with this shade can create a variety of effects, all of which bring a sense of calm and serenity. When paired with red, its contrasting color, this form of aqua looks vibrant and vital. Sherbet shades like lemon yellow and coral are fun and flirty when combined with blue-green. When added to neutrals, this a peaceful, soothing hue that can be used to create a spa-like effect in your bathroom or a restful oasis in the boudoir. Because of its association with the ocean, this color is a popular choice for beach house decor when paired with crisp white and sandy hues. Create a monochromatic effect by pairing aqua with other shades of blue and green. Thinking of adding cyan to your wardrobe? Look for turquoise jewelry and beach glass pieces that closely match this color. Turquoise, a mineral found in the Middle East and the American Southwest, traditionally signifies protection, wealth, prosperity and friendship. Many cultures believe the stone also has healing properties.