Skip to Content

What color is ffff00 in hex?

Hexadecimal color codes are used to represent colors in web design, graphic design, and computing. The hex code ffff00 represents a bright yellow color. In this article, we’ll look at what this hex code means, how hex colors work in general, and some examples of where you might see this particular yellow used.

How Hexadecimal Color Codes Work

Hexadecimal color codes are 6-digit codes preceded by a hash (#) sign. Each pair of digits represents the brightness of one of the three primary colors: red, green and blue. These are called RGB values.

For example:

  • FF = Max red
  • 00 = No green
  • 00 = No blue

By mixing different quantities of these three colors, millions of other colors can be represented. The digits are base-16 rather than base-10, meaning each digit can be 0-9 or A-F. Here’s a quick overview:

Digit Value
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
A 10
B 11
C 12
D 13
E 14
F 15

So in the example of ffff00:

  • ff = 255 red
  • ff = 255 green
  • 00 = 0 blue

This mixes together the maximum amounts of red and green to make a bright yellow color, with no blue component.

The Meaning of ffff00

Specifically, ffff00 represents a color with:

  • Red: 100%
  • Green: 100%
  • Blue: 0%

In RGB color values, this translates to:

  • Red: 255
  • Green: 255
  • Blue: 0

In HSL (Hue Saturation Lightness) this color is:

  • Hue: 60°
  • Saturation: 100%
  • Lightness: 50%

So in summary, ffff00 is a bright, vivid yellow color made by mixing maximum red and green light. It sits exactly between red and green on the color wheel, at 60° hue. The high saturation gives it a very intense, bold appearance.

Where ffff00 is Used

This bold yellow color has a variety of uses including:

  • Warning Signs – High visibility safety and warning signs often use a fluorescent yellow color like this to attract attention.
  • Taxi Cabs – In many places, taxi cabs are painted a distinctive yellow color based on ff or ffff00 hex codes.
  • Construction Vehicles – Construction vehicles like bulldozers and backhoes are painted yellow for visibility.
  • Sports Equipment – From golf balls to safety vests, bright yellow is ubiquitous in sports for visibility. Ffff00 features heavily in these applications.
  • Sunflower Yellow – The bold yellow of the sunflower petals is well represented by ffff00 or similar hex codes.
  • Food Packaging – Mustard and other bright condiment packages often use yellow colors from the ff00-ffff range.

In web design, ffff00 is used sparingly as a vivid accent color. Too much can be overwhelming. But used properly, it attracts attention and evokes feelings of happiness and cheerfulness.

Examples of ffff00 in Use

Here are some visual examples of the hex color ffff00 displayed on different objects:

Yellow square Black square with yellow F Yellow square with white F
Pure ffff00 color. FFFF00 text on a black background. Easy to read. FFFF00 text on a white background. Can be glaring.
Black background with yellow circle Yellow background with dark gray circle
FFFF00 circle pops on black background. FFFF00 as a background color.

As you can see, ffff00 provides a bright, attention-grabbing yellow color. It works well for accent colors, warnings, and highlighting important text or objects. Different backgrounds can help make ffff00 more or less intense as needed.

Other Yellow Hex Codes

There are many other shades of yellow that can be specified with hex codes. Here are a few other common ones:

Hex Code Color Preview Description
ffff00 Bright yellow (as discussed above)
fffb00 Very light yellow
ffef00 Lighter yellow
ffdf00 Light yellow
ffbf00 Gold yellow
ff9f00 Orange yellow
ff7f00 Orange

By adjusting the red and green values up or down, different shades of yellow can be mixed. Less green shifts toward orange, while less red shifts toward beige.


Hexadecimal color code ffff00 represents a bright, intense yellow. This color is formed by combining pure red and pure green light at maximum intensity. It can be used attractively as an accent color, but large blocks of ffff00 will appear glaring and overwhelming. Similar codes can be used to generate different shades of yellow. Understanding hex codes like ffff00 allows precise color control across different applications.