Tailwind CSS v3 color

Tailwind slate-200 #E2E8F0

Tailwind CSS v3's slate-200 is #E2E8F0. It is an off-white in the neutral family. In OKLCH it sits at lightness 0.929 with chroma 0.013, too low for hue to matter. The nearest CSS named color is aliceblue (#F0F8FF), ΔE2000 3.5 away.

Relative luminance
0.8017
OKLCH L · C · h
0.929 · 0.013 · 255.5
Best text
Black 17.03:1
Hue family
Neutral
Inspect this color Check contrast

#E2E8F0 color codes

HEX
#E2E8F0
RGB
rgb(226, 232, 240)
HSL
hsl(214, 32%, 91%)
OKLCH
oklch(0.929 0.013 255.5)
OKLab
oklab(0.929 -0.003 -0.012)
CIELAB (D65)
L* 91.76, a* -0.52, b* -4.57
XYZ (D65)
X 75.95, Y 80.17, Z 93.89
CMYK (naive)
cmyk(6%, 3%, 0%, 6%)

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 #E2E8F0 accessible?

Black text on it reaches 17.03:1, passing AAA. White text fails at 1.23:1.

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

    17.03:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +92

  • White text on it

    1.23:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc −13

    Text is here, unreadable at 1.23:1

  • As text on black

    17.03:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −92

  • As text on white

    1.23:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc +11

    Text is here, unreadable at 1.23:1

Nearest versions that pass 4.5:1

  • For text on white

    #72777F 4.50:1

    Darkening its OKLCH lightness from 0.93 to 0.57 reaches 4.50:1 on white, keeping the hue.

    Compare both in the Contrast System

  • For text on black

    #E2E8F0 17.03:1

    It already reaches 17.03:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #E2E8F0 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 #E2E8F0

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #E2E8F0 sits at step 100.

  1. 50#F1F6FC
    White
    1.08
    Black
    19.32
  2. 100This color#E2E8F0
    White
    1.23
    Black
    17.03
  3. 200#D3D8DF
    White
    1.43
    Black
    14.65
  4. 300#B9BEC5
    White
    1.86
    Black
    11.23
  5. 400#9CA2A9
    White
    2.57
    Black
    8.15
  6. 500#81878E
    White
    3.62
    Black
    5.78
  7. 600#6A6F76
    White
    5.06
    Black
    4.14
  8. 700#54585F
    White
    7.14
    Black
    2.93
  9. 800#3C4046
    White
    10.42
    Black
    2.01
  10. 900#25292E
    White
    14.63
    Black
    1.43
  11. 950#13161A
    White
    18.14
    Black
    1.15

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

Tailwind CSS v3 slate scale

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

  1. 50#F8FAFC
    White
    1.04
    Black
    20.07
  2. 100#F1F5F9
    White
    1.09
    Black
    19.16
  3. 200This color#E2E8F0
    White
    1.23
    Black
    17.03
  4. 300#CBD5E1
    White
    1.48
    Black
    14.14
  5. 400#94A3B8
    White
    2.56
    Black
    8.19
  6. 500#64748B
    White
    4.75
    Black
    4.41
  7. 600#475569
    White
    7.57
    Black
    2.77
  8. 700#334155
    White
    10.35
    Black
    2.02
  9. 800#1E293B
    White
    14.62
    Black
    1.43
  10. 900#0F172A
    White
    17.85
    Black
    1.17
  11. 950#020617
    White
    20.17
    Black
    1.04

Gamut

How vivid #E2E8F0 can get

A gray has no hue, so no gamut holds a more vivid version of #E2E8F0: more chroma would make it another color.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.013
sRGB edge
No hue
Display P3 edge
No hue
Rec. 2020 edge
No hue
Dominant wavelength
479 nm
Excitation purity
4%
Chromaticity
x 0.3038, y 0.3207

Mixing

Mixing #E2E8F0

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%#F1F4F8
  • OKLab50%#F0F3F8
  • OKLCH50%#F0F3F8

Black #000000

  • sRGB50%#717478
  • OKLab50%#57595D
  • OKLCH50%#57595D
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #e2e8f0, white);
color: color-mix(in oklch, #e2e8f0 50%, white);

In use

#E2E8F0 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, 4.5:117.03:1 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 #72777F 4.50:1

Dark page

  • Button labelText, 4.5:117.03:1 Passes
  • Link and body-size textText, 4.5:115.19:1 Passes
  • Large headingLarge text, 3:115.19:1 Passes
  • Icons, borders and focus ringsNon-text, 3:115.19:1 Passes

Color vision

How #E2E8F0 looks with color blindness

As a neutral it barely changes under any simulation, ΔE2000 5.1 at most.

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

    #E5E8F0 ΔE2000 1.4

    Very close

    Reads as off-white

  • Deuteranopia

    No working green (medium-wavelength) cones

    #E4E7F0 ΔE2000 1.7

    Very close

    Reads as off-white

  • Tritanopia

    No working blue (short-wavelength) cones

    #DFEAEA ΔE2000 5.1

    Noticeable

    Reads as off-white

  • Achromatopsia

    No cone color vision; lightness only

    #E7E7E7 ΔE2000 4.2

    Close match

    Reads as off-white

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 #E2E8F0

A neutral has no hue to rotate, so every harmony collapses back to the same gray. Pair it with an accent color instead.

Or pair it by lightness: steps of its own scale as text on it, and what each can carry.

Build a lightness scale in Harmony Studio

  • Step 950 #13161A · 14.71:1

    Body text, AAA

  • Step 700 #54585F · 5.79:1

    Body text, AA

  • Step 300 #B9BEC5 · 1.51:1

    Decoration only, under 3:1

Code

Design tokens

Ready-to-paste tokens in six formats. Rename them to fit your system.

CSS custom property

:root {
  --color-slate-200: #e2e8f0;
}

Tailwind config

// tailwind.config.js — already built in as slate-200;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        slate: { 200: '#e2e8f0' },
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  /* v4 has its own slate-200; this pins the v3 value. */
  --color-slate-200: oklch(0.929 0.013 255.5);
}

Design token (W3C DTCG)

{
  "color": {
    "slate-200": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.8863, 0.9098, 0.9412],
        "hex": "#e2e8f0"
      },
      "$description": "Tailwind CSS v3 slate-200"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let slate200 = Color(.sRGB, red: 0.886, green: 0.910, blue: 0.941, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Slate200 = Color(0xFFE2E8F0)
}

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 #E2E8F0 in the tools

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