CSS named color

Lawn Green #7CFC00

The CSS keyword lawngreen is #7CFC00. It is a pale vivid green in the green family. In OKLCH it sits at lightness 0.882, chroma 0.263 and hue 136.2°.

Relative luminance: 0.7391
OKLCH L · C · h: 0.882 · 0.263 · 136.2
Best text: Black 15.78:1
Hue family: Green

Inspect this color Check contrast

#7CFC00 color codes

HEX: #7CFC00
RGB: rgb(124, 252, 0)
HSL: hsl(90, 100%, 49%)
OKLCH: oklch(0.882 0.263 136.2)
OKLab: oklab(0.882 -0.190 0.182)
CIELAB (D65): L* 88.88, a* -67.86, b* 84.95
XYZ (D65): X 43.12, Y 73.90, Z 11.99
CMYK (naive): cmyk(51%, 0%, 100%, 1%)

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 #7CFC00 accessible?

Black text on it reaches 15.78:1, passing AAA. White text fails at 1.33:1.

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

15.78:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +87
White text on it

1.33:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc −18
Text is here, unreadable at 1.33:1
As text on black

15.78:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −87
As text on white

1.33:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc +15
Text is here, unreadable at 1.33:1

Nearest versions that pass 4.5:1

For text on white

#3F8600 4.54:1

Darkening its OKLCH lightness from 0.88 to 0.55 reaches 4.54:1 on white, keeping the hue.

Compare both in the Contrast System
For text on black

#7CFC00 15.78:1

It already reaches 15.78:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #7CFC00 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 #7CFC00

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #7CFC00 sits at step 200.

50#E4FFD8

White
1.07
Black
19.59
100#C4FFAA

White
1.15
Black
18.23
200This color#7CFC00

White
1.33
Black
15.78
300#6CDE00

White
1.73
Black
12.08
400#5BBD00

White
2.40
Black
8.72
500#4B9D00

White
3.43
Black
6.12
600#3D8200

White
4.78
Black
4.39
700#2F6800

White
6.77
Black
3.10
800#204C00

White
10.02
Black
2.09
900#133100

White
14.31
Black
1.46
950#071C00

White
17.87
Black
1.17

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

Gamut

How vivid #7CFC00 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.263; #7CFC00 uses 100% of it. Display P3, which many recent phones and laptops show, reaches 0.309 there: 17% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.263
sRGB edge: 0.263
Display P3 edge: 0.309
Rec. 2020 edge: 0.320
Dominant wavelength: 556 nm
Excitation purity: 75%
Chromaticity: x 0.3342, y 0.5728

This color#7CFC00
Most vivid in sRGB#7CFC00
Most vivid in Display P3oklch(0.882 0.309 136.2)

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

Use the wider color where screens show it

.accent {
  color: #7cfc00;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.5685 0.9938 0); }
}

Mixing

Mixing #7CFC00

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%#BEFE80
OKLab50%#C3FFA7
OKLCH50%#C5FFAB

Black #000000

sRGB50%#3E7E00
OKLab50%#2C6200
OKLCH50%#2C6200

Its complement #EFC7FF

sRGB50%#B6E280
OKLab50%#BEE6AC
OKLCH50%#FFCBB3

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #7cfc00, white);
color: color-mix(in oklch, #7cfc00 50%, white);

In use

#7CFC00 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, 4.5:115.78:1 Passes
Link and body-size textText, 4.5:11.33:1 Fails
Large headingLarge text, 3:11.33:1 Fails
Icons, borders and focus ringsNon-text, 3:11.33:1 Fails

For text on this page, the nearest shade that passes is #3F8600 4.54:1

Dark page

Button labelText, 4.5:115.78:1 Passes
Link and body-size textText, 4.5:114.07:1 Passes
Large headingLarge text, 3:114.07:1 Passes
Icons, borders and focus ringsNon-text, 3:114.07:1 Passes

Color vision

How #7CFC00 looks with color blindness

Achromatopsia changes it most, ΔE2000 31.6; protanopia changes it least, 23.5.

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

#FFE600 ΔE2000 23.5

Distinct

Reads as pale vivid yellow
Deuteranopia

No working green (medium-wavelength) cones

#F5DB38 ΔE2000 23.7

Distinct

Reads as pale soft amber
Tritanopia

No working blue (short-wavelength) cones

#75F2D6 ΔE2000 26.3

Distinct

Reads as pale soft cyan
Achromatopsia

No cone color vision; lightness only

#DFDFDF ΔE2000 31.6

Distinct

Reads as off-white

Pairing check

Checked against its complement, #EFC7FF. Their lightness contrast is only 1.10:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#7CFC00 · #EFC7FF	70.9	Stays distinct
Protanopia	#FFE600 · #C0D2FF	49.9	Stays distinct
Deuteranopia	#F5DB38 · #C8D6FD	46.2	Stays distinct
Tritanopia	#75F2D6 · #EFCDDA	46.9	Stays distinct
Achromatopsia	#DFDFDF · #D5D5D5	2.3	Easily confused

Harmony

Color harmonies for #7CFC00

Its complement is #EFC7FF, a pale muted magenta.

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

Open the Harmony Studio

Base#7CFC00
Complement#EFC7FF

Complementary

Open in Harmony Studio

−30°#E9DE00
Base#7CFC00
+30°#00FDBC

Analogous

Open in Harmony Studio

Base#7CFC00
+120°#BFDAFF
+240°#FFC8CA

Triadic

Open in Harmony Studio

Base#7CFC00
+150°#D4D3FF
+210°#FFC4E3

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-lawngreen: #7cfc00;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        lawngreen: '#7cfc00',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-lawngreen: oklch(0.882 0.263 136.2);
}

Design token (W3C DTCG)

{
  "color": {
    "lawngreen": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.4863, 0.9882, 0],
        "hex": "#7cfc00"
      },
      "$description": "CSS named color lawngreen"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let lawngreen = Color(.sRGB, red: 0.486, green: 0.988, blue: 0.000, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Lawngreen = Color(0xFF7CFC00)
}

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 #7CFC00 in the tools

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

Lawn Green #7CFC00

#7CFC00 color codes

Contrast: is #7CFC00 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 #7CFC00 live

Shades and tints of #7CFC00

How vivid #7CFC00 can get

Mixing #7CFC00

#7CFC00 in an interface

How #7CFC00 looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #7CFC00

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 #7CFC00 in the tools