CSS named color

Lime #00FF00

The CSS keyword lime is #00FF00. It is a pale vivid green in the green family. In OKLCH it sits at lightness 0.866, chroma 0.295 and hue 142.5°.

Relative luminance: 0.7152
OKLCH L · C · h: 0.866 · 0.295 · 142.5
Best text: Black 15.30:1
Hue family: Green

Inspect this color Check contrast

#00FF00 color codes

HEX: #00FF00
RGB: rgb(0, 255, 0)
HSL: hsl(120, 100%, 50%)
OKLCH: oklch(0.866 0.295 142.5)
OKLab: oklab(0.866 -0.234 0.179)
CIELAB (D65): L* 87.73, a* -86.18, b* 83.18
XYZ (D65): X 35.76, Y 71.52, Z 11.92
CMYK (naive): cmyk(100%, 0%, 100%, 0%)

CIELAB and XYZ use the D65 white point; CSS lab() uses D50, so paste the OKLCH or HEX value into stylesheets. CMYK here is a plain formula with no press profile.

Legibility

Contrast: is #00FF00 accessible?

Black text on it reaches 15.30:1, passing AAA. White text fails at 1.37:1.

WCAG 2 gives the same ratio whichever color is the text; APCA does not, so its Lc changes sign and size with polarity.

Open the Contrast System

Black text on it

15.30:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +86
White text on it

1.37:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc −19
Text is here, unreadable at 1.37:1
As text on black

15.30:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −86
As text on white

1.37:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc +17
Text is here, unreadable at 1.37:1

Nearest versions that pass 4.5:1

For text on white

#008900 4.58:1

Darkening its OKLCH lightness from 0.87 to 0.55 reaches 4.58:1 on white, keeping the hue.

Compare both in the Contrast System
For text on black

#00FF00 15.30:1

It already reaches 15.30:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #00FF00 live

Move lightness, chroma and hue in OKLCH, or drag on the map. The map is every lightness and chroma at the current hue: sRGB inside the solid area, Display P3 out to the dashed line.

The studio needs JavaScript.

Scale

Shades and tints of #00FF00

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #00FF00 sits at step 200.

50#E1FFDE

White
1.07
Black
19.56
100#BFFFB9

White
1.15
Black
18.21
200This color#00FF00

White
1.37
Black
15.30
300#00E500

White
1.72
Black
12.20
400#00C400

White
2.36
Black
8.89
500#00A300

White
3.36
Black
6.23
600#008700

White
4.70
Black
4.46
700#006C00

White
6.67
Black
3.14
800#004F00

White
9.91
Black
2.11
900#003400

White
14.08
Black
1.49
950#001D00

White
17.86
Black
1.17

Under each step, white and black text on it; a bold figure passes 4.5:1.

Gamut

How vivid #00FF00 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.295; #00FF00 uses 100% of it. Display P3, which many recent phones and laptops show, reaches 0.331 there: 12% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.295
sRGB edge: 0.295
Display P3 edge: 0.331
Rec. 2020 edge: 0.362
Dominant wavelength: 549 nm
Excitation purity: 73%
Chromaticity: x 0.3000, y 0.6000

This color#00FF00
Most vivid in sRGB#00FF00
Most vivid in Display P3oklch(0.866 0.331 142.5)

On a screen without Display P3 the last tile shows the sRGB edge instead.

Use the wider color where screens show it

.accent {
  color: #00ff00;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.3881 1 0.1605); }
}

Mixing

Mixing #00FF00

Each row is the same mix worked out in a different space, with the halfway color at its end. sRGB, which older CSS gradients use, can sag gray or dark in the middle; OKLab keeps the lightness steps even; OKLCH holds chroma and hue as it goes.

White #FFFFFF

sRGB50%#80FF80
OKLab50%#ADFFA6
OKLCH50%#B7FFB0

Black #000000

sRGB50%#008000
OKLab50%#006300
OKLCH50%#006300

Its complement #F7BAFF

sRGB50%#7CDD80
OKLab50%#B1E3AC
OKLCH50%#FFC5A1

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #00ff00, white);
color: color-mix(in oklch, #00ff00 50%, white);

In use

#00FF00 in an interface

A button, a link, a heading, a focused field, an icon and a chart line in this color, on a light page and a dark one. Each check is a WCAG 2 contrast minimum: 1.4.3 for text, 1.4.11 for the rest.

Light page

Button labelText, 4.5:115.30:1 Passes
Link and body-size textText, 4.5:11.37:1 Fails
Large headingLarge text, 3:11.37:1 Fails
Icons, borders and focus ringsNon-text, 3:11.37:1 Fails

For text on this page, the nearest shade that passes is #008900 4.58:1

Dark page

Button labelText, 4.5:115.30:1 Passes
Link and body-size textText, 4.5:113.65:1 Passes
Large headingLarge text, 3:113.65:1 Passes
Icons, borders and focus ringsNon-text, 3:113.65:1 Passes

Color vision

How #00FF00 looks with color blindness

Achromatopsia changes it most, ΔE2000 32.4; tritanopia changes it least, 25.8.

Simulated with Machado et al. (2009) at full severity, in linear light.

Simulate a whole page What each type sees

Protanopia

No working red (long-wavelength) cones

#FFE500 ΔE2000 28.3

Distinct

Reads as pale vivid yellow
Deuteranopia

No working green (medium-wavelength) cones

#EFD63A ΔE2000 28.0

Distinct

Reads as pale soft amber
Tritanopia

No working blue (short-wavelength) cones

#00F7D9 ΔE2000 25.8

Distinct

Reads as pale soft cyan
Achromatopsia

No cone color vision; lightness only

#DCDCDC ΔE2000 32.4

Distinct

Reads as light gray

Pairing check

Checked against its complement, #F7BAFF. Their lightness contrast is only 1.14:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#00FF00 · #F7BAFF	80.6	Stays distinct
Protanopia	#FFE500 · #B4CAFF	52.4	Stays distinct
Deuteranopia	#EFD63A · #C1D1FD	47.5	Stays distinct
Tritanopia	#00F7D9 · #F9C1D2	59.4	Stays distinct
Achromatopsia	#DCDCDC · #CFCFCF	3.0	Easily confused

Harmony

Color harmonies for #00FF00

Its complement is #F7BAFF, a pale soft magenta.

Hue rotations in OKLCH, mapped into sRGB by trimming chroma so hue and lightness stay put.

Open the Harmony Studio

Base#00FF00
Complement#F7BAFF

Complementary

Open in Harmony Studio

−30°#D6DE00
Base#00FF00
+30°#00F6C8

Analogous

Open in Harmony Studio

Base#00FF00
+120°#BCD4FF
+240°#FFC1BE

Triadic

Open in Harmony Studio

Base#00FF00
+150°#D4CBFF
+210°#FFBDD8

Split-complementary

Open in Harmony Studio

Code

Design tokens

Ready-to-paste tokens in six formats. Rename them to fit your system.

CSS custom property

:root {
  --color-lime: #00ff00;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        lime: '#00ff00',
      },
    },
  },
};

Tailwind v4 theme

/* app.css — Tailwind CSS v4 */
@import "tailwindcss";

@theme {
  --color-lime: oklch(0.866 0.295 142.5);
}

Design token (W3C DTCG)

{
  "color": {
    "lime": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0, 1, 0],
        "hex": "#00ff00"
      },
      "$description": "CSS named color lime"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let lime = Color(.sRGB, red: 0.000, green: 1.000, blue: 0.000, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Lime = Color(0xFF00FF00)
}

Matches

The nearest match in each system

The closest CSS name, Tailwind shade, RAL Classic paint and Crayola crayon by ΔE2000; under 2 is hard to tell apart side by side. RAL and Crayola values approximate physical colors.

Tools

Open #00FF00 in the tools

Each opens over this page. More colors live in the Color Library, and every color page is listed on the hub.

Lime #00FF00

#00FF00 color codes

Contrast: is #00FF00 accessible?

Black text on it

White text on it

As text on black

As text on white

Nearest versions that pass 4.5:1

Adjust #00FF00 live

Shades and tints of #00FF00

How vivid #00FF00 can get

Mixing #00FF00

#00FF00 in an interface

How #00FF00 looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #00FF00

Complementary

Analogous

Triadic

Split-complementary

Design tokens

CSS custom property

Tailwind config

Tailwind v4 theme

Design token (W3C DTCG)

SwiftUI color

Jetpack Compose color

The nearest match in each system

Similar colors

Open #00FF00 in the tools