00FFFF

00FFFF is a hexadecimal color code used in digital color representation. In the RGB color model, the six-digit value 00FFFF corresponds to red = 0, green = 255, and blue = 255, producing a bright cyan color. In CSS and HTML, this color is commonly referenced as #00FFFF and is also available as the named colors aqua and cyan in the CSS color keyword set.

In addition to its RGB representation, 00FFFF can be described in other color spaces. In HSL, it is hsl(180, 100%, 50%), and in HSV (or HSB) it is hsv(180, 100%, 100%). These values reflect a pure cyan hue with full saturation and mid-level lightness, making the color highly vivid on standard displays.

Web usage and accessibility considerations identify 00FFFF as a web-safe color, since its channel values align with the common 0–255 palette used in early web design. It is frequently employed for accents, highlights, UI elements, and graphic outlines due to its high visibility. Designers often pair it with dark backgrounds or pale neutrals to maintain contrast and legibility.

In printing, reproducing 00FFFF involves cyan and possibly other CMYK inks. Pure digital cyan is approximated in CMYK processes, which can affect exact color fidelity across devices and media. Overall, 00FFFF remains a widely recognized bright cyan in digital design.