Tailwind CSS v3 color

Tailwind emerald-950 #022C22

Tailwind CSS v3's emerald-950 is #022C22. It is a very dark grayish teal in the green family. In OKLCH it sits at lightness 0.262, chroma 0.049 and hue 172.6°. The nearest CSS named color is darkslategray (#2F4F4F), ΔE2000 13.2 away.

Relative luminance: 0.0193
OKLCH L · C · h: 0.262 · 0.049 · 172.6
Best text: White 15.15:1
Hue family: Green

Inspect this color Check contrast

#022C22 color codes

HEX: #022C22
RGB: rgb(2, 44, 34)
HSL: hsl(166, 91%, 9%)
OKLCH: oklch(0.262 0.049 172.6)
OKLab: oklab(0.262 -0.048 0.006)
CIELAB (D65): L* 15.11, a* -17.22, b* 2.49
XYZ (D65): X 1.21, Y 1.93, Z 1.82
CMYK (naive): cmyk(95%, 0%, 23%, 83%)

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 #022C22 accessible?

White text on it reaches 15.15:1, passing AAA. Black text fails at 1.38:1.

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

1.38:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc 0
Text is here, unreadable at 1.38:1
White text on it

15.15:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −104
As text on black

1.38:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc 0
Text is here, unreadable at 1.38:1
As text on white

15.15:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +101

Nearest versions that pass 4.5:1

For text on white

#022C22 15.15:1

It already reaches 15.15:1 on white, so no change is needed.
For text on black

#567D71 4.56:1

Lightening its OKLCH lightness from 0.26 to 0.56 reaches 4.56:1 on black, keeping the hue.

Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #022C22 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 #022C22

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #022C22 sits at step 900.

50#DCFEF2

White
1.07
Black
19.50
100#D1F4E8

White
1.17
Black
17.81
200#BCE1D4

White
1.41
Black
14.85
300#A1C8BB

White
1.82
Black
11.49
400#83AC9E

White
2.51
Black
8.35
500#689083

White
3.55
Black
5.90
600#51786C

White
4.93
Black
4.25
700#3B6155

White
6.93
Black
3.02
800#25483D

White
10.13
Black
2.07
900This color#022C22

White
15.15
Black
1.38
950#011B14

White
17.97
Black
1.16

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

Tailwind CSS v3 emerald scale

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

50#ECFDF5
White
1.05
Black
19.93
100#D1FAE5
White
1.13
Black
18.51
200#A7F3D0
White
1.28
Black
16.37
300#6EE7B7
White
1.52
Black
13.77
400#34D399
White
1.92
Black
10.92
500#10B981
White
2.53
Black
8.27
600#059669
White
3.76
Black
5.57
700#047857
White
5.48
Black
3.82
800#065F46
White
7.68
Black
2.73
900#064E3B
White
9.71
Black
2.16
950This color#022C22

White
15.15
Black
1.38

Gamut

How vivid #022C22 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.051; #022C22 uses 96% of it. Display P3, which many recent phones and laptops show, reaches 0.069 there: 36% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.049
sRGB edge: 0.051
Display P3 edge: 0.069
Rec. 2020 edge: 0.110
Dominant wavelength: 503 nm
Excitation purity: 22%
Chromaticity: x 0.2446, y 0.3886

This color#022C22
Most vivid in sRGB#002C22
Most vivid in Display P3oklch(0.262 0.069 172.6)

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

Use the wider color where screens show it

.accent {
  color: #022c22;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0 0.1789 0.132); }
}

Mixing

Mixing #022C22

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%#819691
OKLab50%#7B8F88
OKLCH50%#7B8F88

Black #000000

sRGB50%#011611
OKLab50%#000A07
OKLCH50%#000A07

Its complement #361A27

sRGB50%#1C2325
OKLab50%#242425
OKLCH50%#17243C

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #022c22, white);
color: color-mix(in oklch, #022c22 50%, white);

In use

#022C22 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, 4.5:115.15:1 Passes
Link and body-size textText, 4.5:115.15:1 Passes
Large headingLarge text, 3:115.15:1 Passes
Icons, borders and focus ringsNon-text, 3:115.15:1 Passes

Dark page

Button labelText, 4.5:115.15:1 Passes
Link and body-size textText, 4.5:11.23:1 Fails
Large headingLarge text, 3:11.23:1 Fails
Icons, borders and focus ringsNon-text, 3:11.23:1 Fails

For text on this page, the nearest shade that passes is #5D8578 4.54:1

Color vision

How #022C22 looks with color blindness

Deuteranopia changes it most, ΔE2000 16.8; tritanopia changes it least, 3.2.

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

#2A2822 ΔE2000 16.1

Distinct

Reads as near-black
Deuteranopia

No working green (medium-wavelength) cones

#252423 ΔE2000 16.8

Distinct

Reads as near-black
Tritanopia

No working blue (short-wavelength) cones

#002D29 ΔE2000 3.2

Close match

Reads as very dark grayish teal
Achromatopsia

No cone color vision; lightness only

#262626 ΔE2000 16.3

Distinct

Reads as near-black

Pairing check

Checked against its complement, #361A27. Their lightness contrast is only 1.03:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#022C22 · #361A27	35.1	Stays distinct
Protanopia	#2A2822 · #1D2027	9.2	Harder to tell apart
Deuteranopia	#252423 · #242526	1.8	Easily confused
Tritanopia	#002D29 · #3A191F	37.1	Stays distinct
Achromatopsia	#262626 · #232323	0.9	Easily confused

Harmony

Color harmonies for #022C22

Its complement is #361A27, a very dark grayish wine, on the warm side of the wheel.

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

Open the Harmony Studio

Base#022C22
Complement#361A27

Complementary

Open in Harmony Studio

−30°#162A14
Base#022C22
+30°#002B2E

Analogous

Open in Harmony Studio

Base#022C22
+120°#25203A
+240°#371D0C

Triadic

Open in Harmony Studio

Base#022C22
+150°#301C32
+210°#391A19

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-emerald-950: #022c22;
}

Tailwind config

// tailwind.config.js — already built in as emerald-950;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        emerald: { 950: '#022c22' },
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  /* v4 has its own emerald-950; this pins the v3 value. */
  --color-emerald-950: oklch(0.262 0.049 172.6);
}

Design token (W3C DTCG)

{
  "color": {
    "emerald-950": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.0078, 0.1725, 0.1333],
        "hex": "#022c22"
      },
      "$description": "Tailwind CSS v3 emerald-950"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let emerald950 = Color(.sRGB, red: 0.008, green: 0.173, blue: 0.133, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Emerald950 = Color(0xFF022C22)
}

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 #022C22 in the tools

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

Tailwind emerald-950 #022C22

#022C22 color codes

Contrast: is #022C22 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 #022C22 live

Shades and tints of #022C22

Tailwind CSS v3 emerald scale

How vivid #022C22 can get

Mixing #022C22

#022C22 in an interface

How #022C22 looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #022C22

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 #022C22 in the tools