blue is the coolest color – the color of the sky, ocean, sleep, twilight. The ancient Egyptians used lapis lazuli to represent heaven. Blue symbolizes the Virgin Mary. A pure blue is the color of inspiration, sincerity and spirituality. Blue is often the chosen color by conservative people. Blue is the calming color. That makes it a wonderful color to use in the home, especially for babies. Blue is so soothing that is a good choice for pajamas. Dark blue is the color of truth and moderation. A blue iris means your friendship is very important to me. Wednesday’s color is blue. Blue gemstones to wear to feel calm are blue sapphire and blue topaz. Lapis lazuli and azurite are said to heighten psychic power.