Tailwind CSS v3 color

Tailwind lime-400 #A3E635

Tailwind CSS v3's lime-400 is #A3E635. It is a pale vivid green in the green family. In OKLCH it sits at lightness 0.849, chroma 0.207 and hue 128.8°. The nearest CSS named color is greenyellow (#ADFF2F), ΔE2000 5.4 away.

Relative luminance
0.6464
OKLCH L · C · h
0.849 · 0.207 · 128.8
Best text
Black 13.92:1
Hue family
Green
Inspect this color Check contrast

#A3E635 color codes

HEX
#A3E635
RGB
rgb(163, 230, 53)
HSL
hsl(83, 78%, 55%)
OKLCH
oklch(0.849 0.207 128.8)
OKLab
oklab(0.849 -0.130 0.161)
CIELAB (D65)
L* 84.30, a* -45.39, b* 73.14
XYZ (D65)
X 44.04, Y 64.64, Z 13.52
CMYK (naive)
cmyk(29%, 0%, 77%, 10%)

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 #A3E635 accessible?

Black text on it reaches 13.92:1, passing AAA. White text fails at 1.50:1.

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

    13.92:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +80

  • White text on it

    1.50:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc −26

  • As text on black

    13.92:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −79

  • As text on white

    1.50:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc +23

Nearest versions that pass 4.5:1

  • For text on white

    #588200 4.55:1

    Darkening its OKLCH lightness from 0.85 to 0.55 reaches 4.55:1 on white, keeping the hue.

    Compare both in the Contrast System

  • For text on black

    #A3E635 13.92:1

    It already reaches 13.92:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #A3E635 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 #A3E635

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #A3E635 sits at step 200.

  1. 50#E7FFCE
    White
    1.07
    Black
    19.59
  2. 100#CCFF8D
    White
    1.15
    Black
    18.25
  3. 200This color#A3E635
    White
    1.50
    Black
    13.92
  4. 300#96D431
    White
    1.78
    Black
    11.75
  5. 400#7CB600
    White
    2.45
    Black
    8.54
  6. 500#679800
    White
    3.46
    Black
    6.06
  7. 600#547D00
    White
    4.87
    Black
    4.31
  8. 700#426400
    White
    6.87
    Black
    3.05
  9. 800#2F4900
    White
    10.12
    Black
    2.07
  10. 900#1D2F00
    White
    14.39
    Black
    1.45
  11. 950#0E1A00
    White
    18.00
    Black
    1.16

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

Tailwind CSS v3 lime scale

The real Tailwind palette, for comparison with the computed ramp above.

  1. 50#F7FEE7
    White
    1.03
    Black
    20.28
  2. 100#ECFCCB
    White
    1.08
    Black
    19.35
  3. 200#D9F99D
    White
    1.16
    Black
    17.98
  4. 300#BEF264
    White
    1.30
    Black
    16.07
  5. 400This color#A3E635
    White
    1.50
    Black
    13.92
  6. 500#84CC16
    White
    1.97
    Black
    10.62
  7. 600#65A30D
    White
    3.08
    Black
    6.79
  8. 700#4D7C0F
    White
    4.99
    Black
    4.20
  9. 800#3F6212
    White
    7.07
    Black
    2.96
  10. 900#365314
    White
    8.73
    Black
    2.40
  11. 950#1A2E05
    White
    14.61
    Black
    1.43

Gamut

How vivid #A3E635 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.225; #A3E635 uses 92% of it. Display P3, which many recent phones and laptops show, reaches 0.263 there: 17% more.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.207
sRGB edge
0.225
Display P3 edge
0.263
Rec. 2020 edge
0.272
Dominant wavelength
561 nm
Excitation purity
70%
Chromaticity
x 0.3604, y 0.5289
  • This color#A3E635
  • Most vivid in sRGB#9FE800
  • Most vivid in Display P3oklch(0.849 0.263 128.8)

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

Use the wider color where screens show it
.accent {
  color: #a3e635;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.6653 0.9124 0); }
}

Mixing

Mixing #A3E635

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%#D1F39A
  • OKLab50%#D1F4AA
  • OKLCH50%#D1F4AA

Black #000000

  • sRGB50%#52731B
  • OKLab50%#3C590E
  • OKLCH50%#3C590E

Its complement #E0BCFF

  • sRGB50%#C2D19A
  • OKLab50%#C3D5B0
  • OKLCH50%#6DDFFF
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #a3e635, white);
color: color-mix(in oklch, #a3e635 50%, white);

In use

#A3E635 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, 4.5:113.92:1 Passes
  • Link and body-size textText, 4.5:11.50:1 Fails
  • Large headingLarge text, 3:11.50:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.50:1 Fails

For text on this page, the nearest shade that passes is #588200 4.55:1

Dark page

  • Button labelText, 4.5:113.92:1 Passes
  • Link and body-size textText, 4.5:112.42:1 Passes
  • Large headingLarge text, 3:112.42:1 Passes
  • Icons, borders and focus ringsNon-text, 3:112.42:1 Passes

Color vision

How #A3E635 looks with color blindness

Achromatopsia changes it most, ΔE2000 29.3; deuteranopia changes it least, 17.7.

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

    #F1D500 ΔE2000 19.2

    Distinct

    Reads as pale vivid amber

  • Deuteranopia

    No working green (medium-wavelength) cones

    #E8D148 ΔE2000 17.7

    Distinct

    Reads as pale soft amber

  • Tritanopia

    No working blue (short-wavelength) cones

    #A8DCC5 ΔE2000 23.9

    Distinct

    Reads as pale muted green

  • Achromatopsia

    No cone color vision; lightness only

    #D2D2D2 ΔE2000 29.3

    Distinct

    Reads as light gray

Pairing check

Checked against its complement, #E0BCFF. Their lightness contrast is only 1.08:1, so where hue collapses, add a label, icon or pattern.

VisionThe pairΔE2000Verdict
Normal vision#A3E635 · #E0BCFF68.6Stays distinct
Protanopia#F1D500 · #B1C8FF51.9Stays distinct
Deuteranopia#E8D148 · #B8CBFD48.3Stays distinct
Tritanopia#A8DCC5 · #DCC5D433.5Stays distinct
Achromatopsia#D2D2D2 · #CACACA1.9Easily confused

Harmony

Color harmonies for #A3E635

Its complement is #E0BCFF, 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#A3E635
  • Complement#E0BCFF

Complementary

Open in Harmony Studio
  • −30°#EBCE00
  • Base#A3E635
  • +30°#00F39D

Analogous

Open in Harmony Studio
  • Base#A3E635
  • +120°#A6D2FF
  • +240°#FFB7C2

Triadic

Open in Harmony Studio
  • Base#A3E635
  • +150°#C2C9FF
  • +210°#FFB0E6

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-400: #a3e635;
}

Tailwind config

// tailwind.config.js — already built in as lime-400;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        lime: { 400: '#a3e635' },
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  /* v4 has its own lime-400; this pins the v3 value. */
  --color-lime-400: oklch(0.849 0.207 128.8);
}

Design token (W3C DTCG)

{
  "color": {
    "lime-400": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.6392, 0.902, 0.2078],
        "hex": "#a3e635"
      },
      "$description": "Tailwind CSS v3 lime-400"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let lime400 = Color(.sRGB, red: 0.639, green: 0.902, blue: 0.208, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Lime400 = Color(0xFFA3E635)
}

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.

Neighbors

The eight nearest colors on this site by ΔE2000, closest first. Under 2 is hard to tell apart side by side.

Tools

Open #A3E635 in the tools

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