Tailwind CSS v3 color

Tailwind sky-950 #082F49

Tailwind CSS v3's sky-950 is #082F49. It is a very dark muted blue in the blue family. In OKLCH it sits at lightness 0.293, chroma 0.063 and hue 243.2°. The nearest CSS named color is midnightblue (#191970), ΔE2000 11.6 away.

Relative luminance
0.0257
OKLCH L · C · h
0.293 · 0.063 · 243.2
Best text
White 13.87:1
Hue family
Blue
Inspect this color Check contrast

#082F49 color codes

HEX
#082F49
RGB
rgb(8, 47, 73)
HSL
hsl(204, 80%, 16%)
OKLCH
oklch(0.293 0.063 243.2)
OKLab
oklab(0.293 -0.029 -0.056)
CIELAB (D65)
L* 18.21, a* -2.45, b* -19.87
XYZ (D65)
X 2.32, Y 2.57, Z 6.68
CMYK (naive)
cmyk(89%, 36%, 0%, 71%)

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 #082F49 accessible?

White text on it reaches 13.87:1, passing AAA. Black text fails at 1.51:1.

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

    1.51:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc 0

  • White text on it

    13.87:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −103

  • As text on black

    1.51:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc 0

  • As text on white

    13.87:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +100

Nearest versions that pass 4.5:1

  • For text on white

    #082F49 13.87:1

    It already reaches 13.87:1 on white, so no change is needed.

  • For text on black

    #537997 4.54:1

    Lightening its OKLCH lightness from 0.29 to 0.56 reaches 4.54:1 on black, keeping the hue.

    Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #082F49 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 #082F49

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #082F49 sits at step 900.

  1. 50#EDF7FF
    White
    1.08
    Black
    19.34
  2. 100#DAEEFF
    White
    1.18
    Black
    17.65
  3. 200#B9DDFA
    White
    1.42
    Black
    14.78
  4. 300#9DC3E2
    White
    1.85
    Black
    11.33
  5. 400#80A7C6
    White
    2.54
    Black
    8.26
  6. 500#658BAA
    White
    3.60
    Black
    5.82
  7. 600#4E7391
    White
    5.01
    Black
    4.18
  8. 700#385C78
    White
    7.07
    Black
    2.97
  9. 800#22435C
    White
    10.36
    Black
    2.02
  10. 900This color#082F49
    White
    13.87
    Black
    1.51
  11. 950#00182A
    White
    18.03
    Black
    1.16

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

Tailwind CSS v3 sky scale

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

  1. 50#F0F9FF
    White
    1.06
    Black
    19.69
  2. 100#E0F2FE
    White
    1.14
    Black
    18.30
  3. 200#BAE6FD
    White
    1.32
    Black
    15.82
  4. 300#7DD3FC
    White
    1.66
    Black
    12.59
  5. 400#38BDF8
    White
    2.14
    Black
    9.80
  6. 500#0EA5E9
    White
    2.77
    Black
    7.57
  7. 600#0284C7
    White
    4.09
    Black
    5.12
  8. 700#0369A1
    White
    5.93
    Black
    3.53
  9. 800#075985
    White
    7.56
    Black
    2.77
  10. 900#0C4A6E
    White
    9.45
    Black
    2.22
  11. 950This color#082F49
    White
    13.87
    Black
    1.51

Gamut

How vivid #082F49 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.072; #082F49 uses 88% of it. Display P3, which many recent phones and laptops show, reaches 0.093 there: 30% more.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.063
sRGB edge
0.072
Display P3 edge
0.093
Rec. 2020 edge
0.198
Dominant wavelength
479 nm
Excitation purity
52%
Chromaticity
x 0.2006, y 0.2219
  • This color#082F49
  • Most vivid in sRGB#002F4D
  • Most vivid in Display P3oklch(0.293 0.093 243.2)

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

Use the wider color where screens show it
.accent {
  color: #082f49;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0 0.1793 0.3263); }
}

Mixing

Mixing #082F49

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%#8497A4
  • OKLab50%#7E91A0
  • OKLCH50%#7E91A0

Black #000000

  • sRGB50%#041825
  • OKLab50%#010C17
  • OKLCH50%#010C17

Its complement #422403

  • sRGB50%#252A26
  • OKLab50%#2C2C2C
  • OKLCH50%#3F1F3A
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #082f49, white);
color: color-mix(in oklch, #082f49 50%, white);

In use

#082F49 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, 4.5:113.87:1 Passes
  • Link and body-size textText, 4.5:113.87:1 Passes
  • Large headingLarge text, 3:113.87:1 Passes
  • Icons, borders and focus ringsNon-text, 3:113.87:1 Passes

Dark page

  • Button labelText, 4.5:113.87:1 Passes
  • Link and body-size textText, 4.5:11.34:1 Fails
  • Large headingLarge text, 3:11.34:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.34:1 Fails

For text on this page, the nearest shade that passes is #5B81A0 4.54:1

Color vision

How #082F49 looks with color blindness

Tritanopia changes it most, ΔE2000 14.4; protanopia changes it least, 6.6.

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

    #23304A ΔE2000 6.6

    Noticeable

    Reads as dark muted blue

  • Deuteranopia

    No working green (medium-wavelength) cones

    #1A2A49 ΔE2000 6.9

    Noticeable

    Reads as very dark muted blue

  • Tritanopia

    No working blue (short-wavelength) cones

    #003538 ΔE2000 14.4

    Distinct

    Reads as very dark muted teal

  • Achromatopsia

    No cone color vision; lightness only

    #2C2C2C ΔE2000 13.9

    Distinct

    Reads as near-black

Pairing check

Checked against its complement, #422403. Their lightness contrast is only 1.01:1, so where hue collapses, add a label, icon or pattern.

VisionThe pairΔE2000Verdict
Normal vision#082F49 · #42240331.0Stays distinct
Protanopia#23304A · #2D270030.4Stays distinct
Deuteranopia#1A2A49 · #352E0333.8Stays distinct
Tritanopia#003538 · #491D1E37.0Stays distinct
Achromatopsia#2C2C2C · #2B2B2B0.3Easily confused

Harmony

Color harmonies for #082F49

Its complement is #422403, a very dark muted brown, 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#082F49
  • Complement#422403

Complementary

Open in Harmony Studio
  • −30°#00333B
  • Base#082F49
  • +30°#22294B

Analogous

Open in Harmony Studio
  • Base#082F49
  • +120°#451D29
  • +240°#263108

Triadic

Open in Harmony Studio
  • Base#082F49
  • +150°#471F16
  • +210°#362B00

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-sky-950: #082f49;
}

Tailwind config

// tailwind.config.js — already built in as sky-950;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        sky: { 950: '#082f49' },
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  /* v4 has its own sky-950; this pins the v3 value. */
  --color-sky-950: oklch(0.293 0.063 243.2);
}

Design token (W3C DTCG)

{
  "color": {
    "sky-950": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.0314, 0.1843, 0.2863],
        "hex": "#082f49"
      },
      "$description": "Tailwind CSS v3 sky-950"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let sky950 = Color(.sRGB, red: 0.031, green: 0.184, blue: 0.286, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Sky950 = Color(0xFF082F49)
}

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 #082F49 in the tools

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