CSS named color

Green Yellow #ADFF2F

The CSS keyword greenyellow is #ADFF2F. It is a pale vivid green in the green family. In OKLCH it sits at lightness 0.913, chroma 0.233 and hue 130.0°.

Relative luminance: 0.8061
OKLCH L · C · h: 0.913 · 0.233 · 130.0
Best text: Black 17.12:1
Hue family: Green

Inspect this color Check contrast

#ADFF2F color codes

HEX: #ADFF2F
RGB: rgb(173, 255, 47)
HSL: hsl(84, 100%, 59%)
OKLCH: oklch(0.913 0.233 130.0)
OKLab: oklab(0.913 -0.150 0.179)
CIELAB (D65): L* 91.96, a* -52.48, b* 81.86
XYZ (D65): X 53.51, Y 80.61, Z 15.43
CMYK (naive): cmyk(32%, 0%, 82%, 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 #ADFF2F accessible?

Black text on it reaches 17.12:1, passing AAA. White text fails at 1.22:1.

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

17.12:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +92
White text on it

1.22:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc −12
Text is here, unreadable at 1.22:1
As text on black

17.12:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −93
As text on white

1.22:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc +10
Text is here, unreadable at 1.22:1

Nearest versions that pass 4.5:1

For text on white

#548200 4.59:1

Darkening its OKLCH lightness from 0.91 to 0.55 reaches 4.59:1 on white, keeping the hue.

Compare both in the Contrast System
For text on black

#ADFF2F 17.12:1

It already reaches 17.12:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #ADFF2F 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 #ADFF2F

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #ADFF2F sits at step 100.

50#E6FFCF

White
1.07
Black
19.56
100This color#ADFF2F

White
1.22
Black
17.12
200#A9F14A

White
1.36
Black
15.36
300#8ED700

White
1.76
Black
11.87
400#78B700

White
2.44
Black
8.57
500#639900

White
3.44
Black
6.08
600#517E00

White
4.84
Black
4.33
700#406500

White
6.81
Black
3.07
800#2D4900

White
10.17
Black
2.06
900#1C3000

White
14.26
Black
1.47
950#0D1B00

White
17.88
Black
1.17

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

Gamut

How vivid #ADFF2F can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.234; #ADFF2F uses 100% of it. Display P3, which many recent phones and laptops show, reaches 0.259 there: 11% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.233
sRGB edge: 0.234
Display P3 edge: 0.259
Rec. 2020 edge: 0.298
Dominant wavelength: 560 nm
Excitation purity: 72%
Chromaticity: x 0.3578, y 0.5390

This color#ADFF2F
Most vivid in sRGB#ADFF2F
Most vivid in Display P3oklch(0.913 0.259 130.0)

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

Use the wider color where screens show it

.accent {
  color: #adff2f;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.7337 1 0.2584); }
}

Mixing

Mixing #ADFF2F

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%#D6FF97
OKLab50%#D7FFAD
OKLCH50%#DAFFB7

Black #000000

sRGB50%#578018
OKLab50%#41630C
OKLCH50%#41630C

Its complement #EED9FF

sRGB50%#CEEC97
OKLab50%#CFEFB0
OKLCH50%#B5EDFF

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #adff2f, white);
color: color-mix(in oklch, #adff2f 50%, white);

In use

#ADFF2F 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, 4.5:117.12:1 Passes
Link and body-size textText, 4.5:11.22:1 Fails
Large headingLarge text, 3:11.22:1 Fails
Icons, borders and focus ringsNon-text, 3:11.22:1 Fails

For text on this page, the nearest shade that passes is #548200 4.59:1

Dark page

Button labelText, 4.5:117.12:1 Passes
Link and body-size textText, 4.5:115.27:1 Passes
Large headingLarge text, 3:115.27:1 Passes
Icons, borders and focus ringsNon-text, 3:115.27:1 Passes

Color vision

How #ADFF2F looks with color blindness

Achromatopsia changes it most, ΔE2000 30.5; protanopia changes it least, 18.0.

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

#FFEC00 ΔE2000 18.0

Distinct

Reads as pale vivid yellow
Deuteranopia

No working green (medium-wavelength) cones

#FFE648 ΔE2000 19.1

Distinct

Reads as pale soft amber
Tritanopia

No working blue (short-wavelength) cones

#B2F4DA ΔE2000 25.1

Distinct

Reads as pale muted green
Achromatopsia

No cone color vision; lightness only

#E8E8E8 ΔE2000 30.5

Distinct

Reads as off-white

Pairing check

Checked against its complement, #EED9FF. Their lightness contrast is only 1.06:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#ADFF2F · #EED9FF	58.6	Stays distinct
Protanopia	#FFEC00 · #D4E0FF	49.3	Stays distinct
Deuteranopia	#FFE648 · #D8E1FE	42.6	Stays distinct
Tritanopia	#B2F4DA · #ECDDE6	33.7	Stays distinct
Achromatopsia	#E8E8E8 · #E1E1E1	1.5	Easily confused

Harmony

Color harmonies for #ADFF2F

Its complement is #EED9FF, a pale muted violet.

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

Open the Harmony Studio

Base#ADFF2F
Complement#EED9FF

Complementary

Open in Harmony Studio

−30°#FFE429
Base#ADFF2F
+30°#85FFC2

Analogous

Open in Harmony Studio

Base#ADFF2F
+120°#CDE5FF
+240°#FFD6DB

Triadic

Open in Harmony Studio

Base#ADFF2F
+150°#DCE0FF
+210°#FFD3EF

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-greenyellow: #adff2f;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        greenyellow: '#adff2f',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-greenyellow: oklch(0.913 0.233 130.0);
}

Design token (W3C DTCG)

{
  "color": {
    "greenyellow": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.6784, 1, 0.1843],
        "hex": "#adff2f"
      },
      "$description": "CSS named color greenyellow"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let greenyellow = Color(.sRGB, red: 0.678, green: 1.000, blue: 0.184, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Greenyellow = Color(0xFFADFF2F)
}

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 #ADFF2F 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 Yellow #ADFF2F

#ADFF2F color codes

Contrast: is #ADFF2F 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 #ADFF2F live

Shades and tints of #ADFF2F

How vivid #ADFF2F can get

Mixing #ADFF2F

#ADFF2F in an interface

How #ADFF2F looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #ADFF2F

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 #ADFF2F in the tools