CSS named color

Green #008000

The CSS keyword green is #008000. It is a vivid green in the green family. In OKLCH it sits at lightness 0.520, chroma 0.177 and hue 142.5°.

Relative luminance: 0.1544
OKLCH L · C · h: 0.520 · 0.177 · 142.5
Best text: White 5.13:1
Hue family: Green

Inspect this color Check contrast

#008000 color codes

HEX: #008000
RGB: rgb(0, 128, 0)
HSL: hsl(120, 100%, 25%)
OKLCH: oklch(0.520 0.177 142.5)
OKLab: oklab(0.520 -0.140 0.108)
CIELAB (D65): L* 46.23, a* -51.70, b* 49.90
XYZ (D65): X 7.72, Y 15.44, Z 2.57
CMYK (naive): cmyk(100%, 0%, 100%, 50%)

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 #008000 accessible?

White text on it reaches 5.13:1, passing AA. Black text manages only 4.08:1, enough for large text only.

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

4.08:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc +29
White text on it

5.13:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc −80
As text on black

4.08:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc −27
As text on white

5.13:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc +74

Nearest versions that pass 4.5:1

For text on white

#008000 5.13:1

It already reaches 5.13:1 on white, so no change is needed.
For text on black

#148811 4.55:1

Lightening its OKLCH lightness from 0.52 to 0.54 reaches 4.55:1 on black, keeping the hue.

Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #008000 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 #008000

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #008000 sits at step 600.

50#E1FFDE

White
1.07
Black
19.56
100#BFFFB9

White
1.15
Black
18.21
200#98F191

White
1.37
Black
15.32
300#79D872

White
1.76
Black
11.87
400#57BC51

White
2.40
Black
8.71
500#359F31

White
3.41
Black
6.15
600This color#008000

White
5.13
Black
4.08
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 #008000 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.177; #008000 uses 100% of it. Display P3, which many recent phones and laptops show, reaches 0.209 there: 18% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.177
sRGB edge: 0.177
Display P3 edge: 0.209
Rec. 2020 edge: 0.217
Dominant wavelength: 549 nm
Excitation purity: 73%
Chromaticity: x 0.3000, y 0.6000

This color#008000
Most vivid in sRGB#008000
Most vivid in Display P3oklch(0.520 0.209 142.5)

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

Use the wider color where screens show it

.accent {
  color: #008000;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.1583 0.5056 0); }
}

Mixing

Mixing #008000

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%#80C080
OKLab50%#90C08C
OKLCH50%#90C08C

Black #000000

sRGB50%#004000
OKLab50%#002E00
OKLCH50%#002E00

Its complement #963BA3

sRGB50%#4B5E52
OKLab50%#696969
OKLCH50%#00729C

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #008000, white);
color: color-mix(in oklch, #008000 50%, white);

In use

#008000 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, 4.5:15.13:1 Passes
Link and body-size textText, 4.5:15.13:1 Passes
Large headingLarge text, 3:15.13:1 Passes
Icons, borders and focus ringsNon-text, 3:15.13:1 Passes

Dark page

Button labelText, 4.5:15.13:1 Passes
Link and body-size textText, 4.5:13.64:1 Fails
Large headingLarge text, 3:13.64:1 Passes
Icons, borders and focus ringsNon-text, 3:13.64:1 Passes

For text on this page, the nearest shade that passes is #23911F 4.58:1

Color vision

How #008000 looks with color blindness

Achromatopsia changes it most, ΔE2000 27.6; tritanopia changes it least, 21.2.

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

#837200 ΔE2000 23.7

Distinct

Reads as soft amber
Deuteranopia

No working green (medium-wavelength) cones

#776A18 ΔE2000 22.3

Distinct

Reads as muted brown
Tritanopia

No working blue (short-wavelength) cones

#007C6C ΔE2000 21.2

Distinct

Reads as muted teal
Achromatopsia

No cone color vision; lightness only

#6D6D6D ΔE2000 27.6

Distinct

Reads as gray

Pairing check

Checked against its complement, #963BA3. Their lightness contrast is only 1.18:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#008000 · #963BA3	82.0	Stays distinct
Protanopia	#837200 · #245BA6	53.7	Stays distinct
Deuteranopia	#776A18 · #4966A0	46.8	Stays distinct
Tritanopia	#007C6C · #984B6A	48.8	Stays distinct
Achromatopsia	#6D6D6D · #626262	4.2	Easily confused

Harmony

Color harmonies for #008000

Its complement is #963BA3, a vivid magenta.

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

Open the Harmony Studio

Base#008000
Complement#963BA3

Complementary

Open in Harmony Studio

−30°#6A6F00
Base#008000
+30°#007B63

Analogous

Open in Harmony Studio

Base#008000
+120°#2C61CD
+240°#B92C36

Triadic

Open in Harmony Studio

Base#008000
+150°#6F4DC3
+210°#AF2D72

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-green: #008000;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        green: '#008000',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-green: oklch(0.520 0.177 142.5);
}

Design token (W3C DTCG)

{
  "color": {
    "green": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0, 0.502, 0],
        "hex": "#008000"
      },
      "$description": "CSS named color green"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let green = Color(.sRGB, red: 0.000, green: 0.502, blue: 0.000, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Green = Color(0xFF008000)
}

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 #008000 in the tools

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

Green #008000

#008000 color codes

Contrast: is #008000 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 #008000 live

Shades and tints of #008000

How vivid #008000 can get

Mixing #008000

#008000 in an interface

How #008000 looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #008000

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 #008000 in the tools