Learn what pastel blue is, how to use it in your projects, and what it symbolizes. Find out the hex, RGB, and CMYK codes, as well as color alternatives and combinations for pastel blue . The meaning of the color Pastel Blue and color combinations to inspire your next design. Pastel Blue is a soft, soothing shade of blue with a calming effect, perfect for creating serene and inviting spaces. Its hex code is #AEC6CF, and its RGB values are (174, 198, 207), offering a light , airy feel to designs with its gentle hue. What color is pastel blue? Pastel blue is a delicate, light shade of the primary color blue located in the cyan region of the color wheel. Due to its soft, cool hues, pastel blue can produce a calm and tranquil atmosphere, making it ideal for designs that want to evoke serenity and peace.