Tailwind CSS v3 color

Tailwind sky-100 #E0F2FE

Tailwind CSS v3's sky-100 is #E0F2FE. It is a pale grayish blue in the neutral family. In OKLCH it sits at lightness 0.951, chroma 0.025 and hue 236.8°. The nearest CSS named color is aliceblue (#F0F8FF), ΔE2000 4.0 away.

Relative luminance
0.8651
OKLCH L · C · h
0.951 · 0.025 · 236.8
Best text
Black 18.30:1
Hue family
Neutral
Inspect this color Check contrast

#E0F2FE color codes

HEX
#E0F2FE
RGB
rgb(224, 242, 254)
HSL
hsl(204, 94%, 94%)
OKLCH
oklch(0.951 0.025 236.8)
OKLab
oklab(0.951 -0.014 -0.021)
CIELAB (D65)
L* 94.53, a* -3.59, b* -7.78
XYZ (D65)
X 80.38, Y 86.51, Z 106.21
CMYK (naive)
cmyk(12%, 5%, 0%, 0%)

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 #E0F2FE accessible?

Black text on it reaches 18.30:1, passing AAA. White text fails at 1.14:1.

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

    18.30:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +96

  • White text on it

    1.14:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc −8

    Text is here, unreadable at 1.14:1

  • As text on black

    18.30:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −97

  • As text on white

    1.14:1

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

    Text is here, unreadable at 1.14:1

Nearest versions that pass 4.5:1

  • For text on white

    #697983 4.50:1

    Darkening its OKLCH lightness from 0.95 to 0.57 reaches 4.50:1 on white, keeping the hue.

    Compare both in the Contrast System

  • For text on black

    #E0F2FE 18.30:1

    It already reaches 18.30:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #E0F2FE 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 #E0F2FE

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #E0F2FE sits at step 100.

  1. 50#EBF7FF
    White
    1.08
    Black
    19.28
  2. 100This color#E0F2FE
    White
    1.14
    Black
    18.30
  3. 200#CBDAE4
    White
    1.42
    Black
    14.68
  4. 300#B0C0CB
    White
    1.86
    Black
    11.24
  5. 400#94A4AF
    White
    2.56
    Black
    8.18
  6. 500#798994
    White
    3.60
    Black
    5.81
  7. 600#61717C
    White
    5.04
    Black
    4.16
  8. 700#4C5A64
    White
    7.10
    Black
    2.95
  9. 800#34424B
    White
    10.36
    Black
    2.02
  10. 900#1F2B32
    White
    14.48
    Black
    1.44
  11. 950#0E171E
    White
    18.10
    Black
    1.15

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. 100This color#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. 950#082F49
    White
    13.87
    Black
    1.51

Gamut

How vivid #E0F2FE can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.027; #E0F2FE uses 94% of it. Display P3, which many recent phones and laptops show, reaches 0.029 there: 10% more.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.025
sRGB edge
0.027
Display P3 edge
0.029
Rec. 2020 edge
0.030
Dominant wavelength
483 nm
Excitation purity
8%
Chromaticity
x 0.2943, y 0.3168
  • This color#E0F2FE
  • Most vivid in sRGB#DFF2FF
  • Most vivid in Display P3oklch(0.951 0.029 236.8)

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

Use the wider color where screens show it
.accent {
  color: #e0f2fe;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.8837 0.9485 1); }
}

Mixing

Mixing #E0F2FE

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%#F0F9FF
  • OKLab50%#F0F9FF
  • OKLCH50%#F0F9FF

Black #000000

  • sRGB50%#70797F
  • OKLab50%#565E63
  • OKLCH50%#565E63

Its complement #FDEBDF

  • sRGB50%#EFEFEF
  • OKLab50%#EFEFEF
  • OKLCH50%#F8E9F8
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #e0f2fe, white);
color: color-mix(in oklch, #e0f2fe 50%, white);

In use

#E0F2FE 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, 4.5:118.30:1 Passes
  • Link and body-size textText, 4.5:11.14:1 Fails
  • Large headingLarge text, 3:11.14:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.14:1 Fails

For text on this page, the nearest shade that passes is #697983 4.50:1

Dark page

  • Button labelText, 4.5:118.30:1 Passes
  • Link and body-size textText, 4.5:116.32:1 Passes
  • Large headingLarge text, 3:116.32:1 Passes
  • Icons, borders and focus ringsNon-text, 3:116.32:1 Passes

Color vision

How #E0F2FE looks with color blindness

Achromatopsia changes it most, ΔE2000 7.8; protanopia changes it least, 6.3.

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

    #EDF1FF ΔE2000 6.3

    Noticeable

    Reads as off-white

  • Deuteranopia

    No working green (medium-wavelength) cones

    #E9EEFE ΔE2000 6.4

    Noticeable

    Reads as pale grayish blue

  • Tritanopia

    No working blue (short-wavelength) cones

    #D9F5F6 ΔE2000 7.0

    Noticeable

    Reads as pale grayish cyan

  • Achromatopsia

    No cone color vision; lightness only

    #EFEFEF ΔE2000 7.8

    Noticeable

    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 #E0F2FE

Its complement is #FDEBDF, a pale grayish orange.

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

Open the Harmony Studio
  • Base#E0F2FE
  • Complement#FDEBDF

Complementary

Open in Harmony Studio
  • −30°#DDF4F7
  • Base#E0F2FE
  • +30°#E8EFFF

Analogous

Open in Harmony Studio
  • Base#E0F2FE
  • +120°#FEE8EF
  • +240°#EDF1DF

Triadic

Open in Harmony Studio
  • Base#E0F2FE
  • +150°#FFE9E6
  • +210°#F6EEDC

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-100: #e0f2fe;
}

Tailwind config

// tailwind.config.js — already built in as sky-100;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        sky: { 100: '#e0f2fe' },
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  /* v4 has its own sky-100; this pins the v3 value. */
  --color-sky-100: oklch(0.951 0.025 236.8);
}

Design token (W3C DTCG)

{
  "color": {
    "sky-100": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.8784, 0.949, 0.9961],
        "hex": "#e0f2fe"
      },
      "$description": "Tailwind CSS v3 sky-100"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let sky100 = Color(.sRGB, red: 0.878, green: 0.949, blue: 0.996, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Sky100 = Color(0xFFE0F2FE)
}

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 #E0F2FE in the tools

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