Tailwind CSS v3 color

Tailwind gray-600 #4B5563

Tailwind CSS v3's gray-600 is #4B5563. It is a dark grayish blue in the neutral family. In OKLCH it sits at lightness 0.446, chroma 0.026 and hue 256.8°. The nearest CSS named color is dimgray (#696969), ΔE2000 10.9 away.

Relative luminance
0.0889
OKLCH L · C · h
0.446 · 0.026 · 256.8
Best text
White 7.55:1
Hue family
Neutral
Inspect this color Check contrast

#4B5563 color codes

HEX
#4B5563
RGB
rgb(75, 85, 99)
HSL
hsl(215, 14%, 34%)
OKLCH
oklch(0.446 0.026 256.8)
OKLab
oklab(0.446 -0.006 -0.026)
CIELAB (D65)
L* 35.78, a* -0.45, b* -9.40
XYZ (D65)
X 8.40, Y 8.89, Z 13.08
CMYK (naive)
cmyk(24%, 14%, 0%, 61%)

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 #4B5563 accessible?

White text on it reaches 7.55:1, passing AAA. Black text fails at 2.77:1.

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

    2.77:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc +17

  • White text on it

    7.55:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −91

  • As text on black

    2.77:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc −15

  • As text on white

    7.55:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +86

Nearest versions that pass 4.5:1

  • For text on white

    #4B5563 7.55:1

    It already reaches 7.55:1 on white, so no change is needed.

  • For text on black

    #6B7685 4.55:1

    Lightening its OKLCH lightness from 0.45 to 0.56 reaches 4.55:1 on black, keeping the hue.

    Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #4B5563 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 #4B5563

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #4B5563 sits at step 700.

  1. 50#EFF6FF
    White
    1.08
    Black
    19.29
  2. 100#E2ECFA
    White
    1.19
    Black
    17.61
  3. 200#CED8E7
    White
    1.43
    Black
    14.60
  4. 300#B4BFCE
    White
    1.86
    Black
    11.28
  5. 400#97A2B2
    White
    2.58
    Black
    8.12
  6. 500#7C8796
    White
    3.64
    Black
    5.76
  7. 600#65707E
    White
    5.03
    Black
    4.17
  8. 700This color#4B5563
    White
    7.55
    Black
    2.77
  9. 800#38404D
    White
    10.45
    Black
    2.00
  10. 900#222934
    White
    14.63
    Black
    1.43
  11. 950#10161F
    White
    18.15
    Black
    1.15

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

Tailwind CSS v3 gray scale

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

  1. 50#F9FAFB
    White
    1.04
    Black
    20.09
  2. 100#F3F4F6
    White
    1.10
    Black
    19.08
  3. 200#E5E7EB
    White
    1.23
    Black
    16.96
  4. 300#D1D5DB
    White
    1.47
    Black
    14.25
  5. 400#9CA3AF
    White
    2.53
    Black
    8.27
  6. 500#6B7280
    White
    4.83
    Black
    4.34
  7. 600This color#4B5563
    White
    7.55
    Black
    2.77
  8. 700#374151
    White
    10.30
    Black
    2.03
  9. 800#1F2937
    White
    14.67
    Black
    1.43
  10. 900#111827
    White
    17.73
    Black
    1.18
  11. 950#030712
    White
    20.13
    Black
    1.04

Gamut

How vivid #4B5563 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.157; #4B5563 uses 17% of it. Display P3, which many recent phones and laptops show, reaches 0.200 there: 27% more.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.026
sRGB edge
0.157
Display P3 edge
0.200
Rec. 2020 edge
0.346
Dominant wavelength
478 nm
Excitation purity
17%
Chromaticity
x 0.2766, y 0.2928
  • This color#4B5563
  • Most vivid in sRGB#0050A9
  • Most vivid in Display P3oklch(0.446 0.200 256.8)

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

Use the wider color where screens show it
.accent {
  color: #4b5563;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0 0.2847 0.7212); }
}

Mixing

Mixing #4B5563

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%#A5AAB1
  • OKLab50%#A0A6AE
  • OKLCH50%#A0A6AE

Black #000000

  • sRGB50%#262B32
  • OKLab50%#171C21
  • OKLCH50%#171C21

Its complement #5D5344

  • sRGB50%#545454
  • OKLab50%#545454
  • OKLCH50%#475951
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #4b5563, white);
color: color-mix(in oklch, #4b5563 50%, white);

In use

#4B5563 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, 4.5:17.55:1 Passes
  • Link and body-size textText, 4.5:17.55:1 Passes
  • Large headingLarge text, 3:17.55:1 Passes
  • Icons, borders and focus ringsNon-text, 3:17.55:1 Passes

Dark page

  • Button labelText, 4.5:17.55:1 Passes
  • Link and body-size textText, 4.5:12.47:1 Fails
  • Large headingLarge text, 3:12.47:1 Fails
  • Icons, borders and focus ringsNon-text, 3:12.47:1 Fails

For text on this page, the nearest shade that passes is #747E8E 4.56:1

Color vision

How #4B5563 looks with color blindness

Tritanopia changes it most, ΔE2000 9.4; protanopia changes it least, 2.8.

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

    #505564 ΔE2000 2.8

    Close match

    Reads as dark grayish blue

  • Deuteranopia

    No working green (medium-wavelength) cones

    #4E5363 ΔE2000 3.2

    Close match

    Reads as dark grayish blue

  • Tritanopia

    No working blue (short-wavelength) cones

    #455859 ΔE2000 9.4

    Noticeable

    Reads as dark grayish teal

  • Achromatopsia

    No cone color vision; lightness only

    #545454 ΔE2000 7.8

    Noticeable

    Reads as dark gray

Pairing check

A near-neutral has no complementary hue to pair with, so tell it apart from neighboring grays by lightness contrast alone.

Harmony

Color harmonies for #4B5563

Its complement is #5D5344, a dark grayish brown.

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

Open the Harmony Studio
  • Base#4B5563
  • Complement#5D5344

Complementary

Open in Harmony Studio
  • −30°#455760
  • Base#4B5563
  • +30°#535262

Analogous

Open in Harmony Studio
  • Base#4B5563
  • +120°#624F4F
  • +240°#4E5849

Triadic

Open in Harmony Studio
  • Base#4B5563
  • +150°#615048
  • +210°#565545

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-gray-600: #4b5563;
}

Tailwind config

// tailwind.config.js — already built in as gray-600;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        gray: { 600: '#4b5563' },
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  /* v4 has its own gray-600; this pins the v3 value. */
  --color-gray-600: oklch(0.446 0.026 256.8);
}

Design token (W3C DTCG)

{
  "color": {
    "gray-600": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.2941, 0.3333, 0.3882],
        "hex": "#4b5563"
      },
      "$description": "Tailwind CSS v3 gray-600"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let gray600 = Color(.sRGB, red: 0.294, green: 0.333, blue: 0.388, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Gray600 = Color(0xFF4B5563)
}

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 #4B5563 in the tools

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