CSS named color

Cyan #00FFFF

Cyan is a vivid cyan with the hex code #00FFFF, which converts to rgb(0, 255, 255). It is identical to Aqua — two keywords, one color. Open #00FFFF in the converter to tweak it.

Cyan color values

How #00FFFF converts to RGB

Split the hex code into three pairs and read each pair as a base-16 number: 00 → 0, FF → 255, FF → 255. That gives rgb(0, 255, 255). The step-by-step guide explains the math.

Shades of Cyan

Mixed toward black in 10% steps. Click a swatch to copy its hex.

Tints of Cyan

Mixed toward white in 10% steps.

Color harmonies

Hue rotations of Cyan on the HSL color wheel, keeping saturation and lightness fixed. The color harmony guide explains when each scheme works.

Complementary

Analogous

Split-complementary

Triadic

Tetradic (square)

Contrast and accessibility

Use black text on a cyan background. Test any other pair in the contrast checker; thresholds are explained in the WCAG contrast guide.

Use Cyan in CSS

.element {
  color: cyan;                         /* keyword */
  background-color: #00FFFF;            /* hex */
  border-color: rgb(0 255 255 / 50%);    /* 50% transparent */
}

Need it semi-transparent? Append an alpha byte: #00FFFF80 is Cyan at 50% opacity. See RGBA & transparency.

Similar named colors

FAQ

What is the HEX code for Cyan?

The CSS named color cyan is #00FFFF in hexadecimal. In CSS you can write color: cyan; or color: #00FFFF; — both produce the same pixel.

What is Cyan in RGB?

Cyan is rgb(0, 255, 255): red 0, green 255, blue 255 on the 0–255 scale. As normalized 0–1 floats that is (0, 1, 1).

Is white or black text more readable on Cyan?

Black text is more readable. White on #00FFFF has a contrast ratio of 1.25:1 (Fail), black on #00FFFF has 16.74:1 (AAA). WCAG AA needs 4.5:1 for normal text.