Lime (web) (X11 green)
A bright green used for screens, matching the green of the RGB colour model
Lime (web) or X11 green is a vivid, pure green used in web design and digital graphics. Its colour code is #00FF00, and it matches the green primary of the RGB system. On the web, lime is lighter than the standard web colour called green, which can cause confusion between the two.
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- Lime (web) is #00FF00 in hex code.
- It matches the green primary of the RGB colour model.
- Web lime and X11 green are the same colour.
- Web green (#008000) is darker than web lime.
What colour is Lime (web) (X11 green)?
Lime (web), also called X11 green, is a very bright green seen on screens and in digital graphics. Its colour code is #00FF00, which means it is made from full green light in the RGB model, with no red or blue. This makes it stand out sharply from other greens, especially on digital displays.
Where does Lime (web) (X11 green) come from?
The name lime for this colour comes from the web colour list maintained by the World Wide Web Consortium (W3C). The colour itself was first set as 'green' in the X11 colour names, which were formalised between 1985 and 1989 for computer use. Later, in web standards, the name lime was given to this same shade, while 'green' was assigned to a darker tone.
How Lime (web) (X11 green) is defined
Lime (web) is not a pigment or dye but a digital colour, defined by its RGB values. It is created on screens by setting the green channel to its highest value, with the red and blue channels at zero. This produces a pure, luminous green that is easy to reproduce in digital media.
Where Lime (web) (X11 green) is used
Lime (web) is used mainly in web design, digital graphics, and any context where colours are defined by computer code. Its clear, bright appearance makes it useful for highlighting elements or creating visual contrast on screens. It is less common in print or physical materials.
Green around the world
What the green family means from country to country.
A green kerchief is the sign of the campaign for legal abortion. Huge crowds wore it in 2018, and the movement was called the green wave.
Politics and protestHopeSource: Green scarfGreen and gold have been the official national colours since 1984 and are worn by national sports teams. They echo the leaves and flowers of the golden wattle.
Festival and celebrationPrideSource: National colours of AustraliaA Test cricketer is given a dark green cap, the baggy green, on first playing for Australia. Many players wear the same faded cap for a whole career.
Festival and celebrationPrideSource: Baggy greenThe green field of the flag stands for the land and its rice fields. Many people also read it as the youth and vigour of the country.
Nature and renewalPolitics and protestHopeSource: Flag of BangladeshThe flag is white, green and red. The green band, which took the place of the blue in the Russian flag, is read as the country's forests and farmland.
Politics and protestNature and renewalSource: Flag of BulgariaThe green field of the flag is commonly said to stand for the forests. It was first the colour of the House of Braganza, the family of the first emperor.
Politics and protestNature and renewalPrideSource: Flag of BrazilShades and relatives of Lime (web) (X11 green)
Lime (web) is often confused with the web colour named green, which is darker (#008000). This difference is a rare clash between the X11 and web colour lists. In the RGB model, lime and X11 green are the same, but web green is a separate, deeper shade.
Colours that go with Lime (web) (X11 green)
Harmonies are worked out from the value #00FF00. Contrast ratios follow the WCAG 2 formula.
Questions people ask about Lime (web) (X11 green)
What colour is lime (web) or X11 green?
It is a very bright, pure green, matching the green primary in the RGB colour model, with the hex code #00FF00.
Why is lime (web) different from web green?
In web colours, lime (#00FF00) is lighter and brighter, while web green (#008000) is darker. This difference comes from how colour names were assigned in the web and X11 colour lists.
Where does the name lime (web) come from?
The name lime was given to this bright green in the W3C web colour list, while the same colour was called green in the earlier X11 colour names.
How is lime (web) made?
It is a digital colour, created on screens by setting the green channel to full and red and blue to zero in the RGB model.
Good reading and sources
The facts on this page come from the Wikipedia article "Lime (color)" (the section "Web color "lime" (X11 Green)"), written by its contributors and used under the CC BY-SA 4.0 licence. Rang rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes. The swatch is an approximation: named colours are not fixed standards, and every screen shows them a little differently. If something is wrong, tell us. Last refreshed 2026-10-03.
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