CSS named color

Dark Cyan #008B8B

The CSS keyword darkcyan is #008B8B. It is a muted cyan in the cyan family. In OKLCH it sits at lightness 0.577, chroma 0.098 and hue 194.8°.

Relative luminance: 0.2033
OKLCH L · C · h: 0.577 · 0.098 · 194.8
Best text: Black 5.06:1
Hue family: Cyan

Inspect this color Check contrast

#008B8B color codes

HEX: #008B8B
RGB: rgb(0, 139, 139)
HSL: hsl(180, 100%, 27%)
OKLCH: oklch(0.577 0.098 194.8)
OKLab: oklab(0.577 -0.095 -0.025)
CIELAB (D65): L* 52.21, a* -30.62, b* -9.00
XYZ (D65): X 13.89, Y 20.33, Z 27.61
CMYK (naive): cmyk(100%, 0%, 0%, 45%)

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 #008B8B accessible?

Black text on it reaches 5.06:1, passing AA. White text manages only 4.14:1, 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

5.06:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc +36
White text on it

4.14:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc −73
As text on black

5.06:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc −33
As text on white

4.14:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc +67

Nearest versions that pass 4.5:1

For text on white

#008484 4.53:1

Darkening its OKLCH lightness from 0.58 to 0.56 reaches 4.53:1 on white, keeping the hue.

Compare both in the Contrast System
For text on black

#008B8B 5.06:1

It already reaches 5.06:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #008B8B 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 #008B8B

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #008B8B sits at step 600.

50#D4FFFE

White
1.07
Black
19.53
100#A9FDFC

White
1.15
Black
18.14
200#90EAE9

White
1.38
Black
15.13
300#6FD1D0

White
1.79
Black
11.70
400#4AB4B4

White
2.47
Black
8.47
500#229898

White
3.49
Black
6.01
600This color#008B8B

White
4.14
Black
5.06
700#006565

White
6.88
Black
3.04
800#004A4A

White
10.10
Black
2.07
900#003030

White
14.32
Black
1.46
950#001B1B

White
17.90
Black
1.17

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

Gamut

How vivid #008B8B can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.098; #008B8B uses 100% of it. Display P3, which many recent phones and laptops show, reaches 0.132 there: 34% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.098
sRGB edge: 0.098
Display P3 edge: 0.132
Rec. 2020 edge: 0.215
Dominant wavelength: 491 nm
Excitation purity: 32%
Chromaticity: x 0.2247, y 0.3288

This color#008B8B
Most vivid in sRGB#008B8B
Most vivid in Display P3oklch(0.577 0.132 194.8)

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

Use the wider color where screens show it

.accent {
  color: #008b8b;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0 0.5544 0.5631); }
}

Mixing

Mixing #008B8B

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%#80C5C5
OKLab50%#96C4C4
OKLCH50%#96C4C4

Black #000000

sRGB50%#004646
OKLab50%#003232
OKLCH50%#003232

Its complement #AB6067

sRGB50%#567679
OKLab50%#797979
OKLCH50%#7371B1

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #008b8b, white);
color: color-mix(in oklch, #008b8b 50%, white);

In use

#008B8B 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, 4.5:15.06:1 Passes
Link and body-size textText, 4.5:14.14:1 Fails
Large headingLarge text, 3:14.14:1 Passes
Icons, borders and focus ringsNon-text, 3:14.14:1 Passes

For text on this page, the nearest shade that passes is #008484 4.53:1

Dark page

Button labelText, 4.5:15.06:1 Passes
Link and body-size textText, 4.5:14.51:1 Passes
Large headingLarge text, 3:14.51:1 Passes
Icons, borders and focus ringsNon-text, 3:14.51:1 Passes

Color vision

How #008B8B looks with color blindness

Deuteranopia changes it most, ΔE2000 23.6; tritanopia changes it least, 2.6.

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

#81838B ΔE2000 23.4

Distinct

Reads as gray
Deuteranopia

No working green (medium-wavelength) cones

#70778C ΔE2000 23.6

Distinct

Reads as grayish blue
Tritanopia

No working blue (short-wavelength) cones

#00908B ΔE2000 2.6

Close match

Reads as soft cyan
Achromatopsia

No cone color vision; lightness only

#7C7C7C ΔE2000 22.0

Distinct

Reads as gray

Pairing check

Checked against its complement, #AB6067. 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	#008B8B · #AB6067	47.4	Stays distinct
Protanopia	#81838B · #6E6D67	11.9	Stays distinct
Deuteranopia	#70778C · #817B66	20.9	Stays distinct
Tritanopia	#00908B · #B85863	52.6	Stays distinct
Achromatopsia	#7C7C7C · #767676	2.4	Easily confused

Harmony

Color harmonies for #008B8B

Its complement is #AB6067, a muted pink, 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#008B8B
Complement#AB6067

Complementary

Open in Harmony Studio

−30°#348B6A
Base#008B8B
+30°#2385A5

Analogous

Open in Harmony Studio

Base#008B8B
+120°#8F67A1
+240°#9B702E

Triadic

Open in Harmony Studio

Base#008B8B
+150°#A26187
+210°#A96546

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-darkcyan: #008b8b;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        darkcyan: '#008b8b',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-darkcyan: oklch(0.577 0.098 194.8);
}

Design token (W3C DTCG)

{
  "color": {
    "darkcyan": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0, 0.5451, 0.5451],
        "hex": "#008b8b"
      },
      "$description": "CSS named color darkcyan"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let darkcyan = Color(.sRGB, red: 0.000, green: 0.545, blue: 0.545, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Darkcyan = Color(0xFF008B8B)
}

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 #008B8B in the tools

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

Dark Cyan #008B8B

#008B8B color codes

Contrast: is #008B8B 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 #008B8B live

Shades and tints of #008B8B

How vivid #008B8B can get

Mixing #008B8B

#008B8B in an interface

How #008B8B looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #008B8B

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 #008B8B in the tools