CSS named color

Yellow #FFFF00

Yellow is a vivid yellow with the hex code #FFFF00, which converts to rgb(255, 255, 0). Open #FFFF00 in the converter to tweak it.

Yellow color values

How #FFFF00 converts to RGB

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

Shades of Yellow

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

Tints of Yellow

Mixed toward white in 10% steps.

Color harmonies

Hue rotations of Yellow 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 yellow background. Test any other pair in the contrast checker; thresholds are explained in the WCAG contrast guide.

Use Yellow in CSS

.element {
  color: yellow;                         /* keyword */
  background-color: #FFFF00;            /* hex */
  border-color: rgb(255 255 0 / 50%);    /* 50% transparent */
}

Need it semi-transparent? Append an alpha byte: #FFFF0080 is Yellow at 50% opacity. See RGBA & transparency.

Similar named colors

FAQ

What is the HEX code for Yellow?

The CSS named color yellow is #FFFF00 in hexadecimal. In CSS you can write color: yellow; or color: #FFFF00; — both produce the same pixel.

What is Yellow in RGB?

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

Is white or black text more readable on Yellow?

Black text is more readable. White on #FFFF00 has a contrast ratio of 1.07:1 (Fail), black on #FFFF00 has 19.55:1 (AAA). WCAG AA needs 4.5:1 for normal text.