Dark turquoise (#00CED1) is a captivating deep blue-green that perfectly balances serenity with sophistication. This rich, jewel-like hue sits between teal and classic turquoise on the color wheel, offering designers a versatile shade that evokes both oceanic tranquility and premium elegance.

With its RGB values of 0 red, 206 green, and 209 blue, dark turquoise brings the calming effects of blue while incorporating the refreshing, growth-oriented qualities of green. This psychological blend makes it ideal for travel brands seeking to suggest tropical relaxation, skincare companies emphasizing cleanliness and rejuvenation, or tech firms wanting to convey innovation.

For stunning color combinations, pair dark turquoise with coral for vibrant contrast, gold for luxury appeal, or salmon pink to enhance its oceanic vibes. Avoid pairing it with neon colors or scarlet, as these create jarring visual tension.

In UI design, dark turquoise works beautifully as an accent color for call-to-action buttons or to create clean, refreshing interfaces that feel both modern and trustworthy.