CSS named color

Seashell #FFF5EE

The CSS keyword seashell is #FFF5EE. It is an off-white in the neutral family. In OKLCH it sits at lightness 0.976 with chroma 0.014, too low for hue to matter.

Relative luminance
0.9274
OKLCH L · C · h
0.976 · 0.014 · 57.6
Best text
Black 19.54:1
Hue family
Neutral
Inspect this color Check contrast

#FFF5EE color codes

HEX
#FFF5EE
RGB
rgb(255, 245, 238)
HSL
hsl(25, 100%, 97%)
OKLCH
oklch(0.976 0.014 57.6)
OKLab
oklab(0.976 0.008 0.012)
CIELAB (D65)
L* 97.12, a* 2.16, b* 4.55
XYZ (D65)
X 89.32, Y 92.74, Z 94.07
CMYK (naive)
cmyk(0%, 4%, 7%, 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 #FFF5EE accessible?

Black text on it reaches 19.54:1, passing AAA. White text fails at 1.07:1.

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

    19.54:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +101

  • White text on it

    1.07:1

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

    Text is here, unreadable at 1.07:1

  • As text on black

    19.54:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −102

  • As text on white

    1.07:1

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

    Text is here, unreadable at 1.07:1

Nearest versions that pass 4.5:1

  • For text on white

    #7D746E 4.56:1

    Darkening its OKLCH lightness from 0.98 to 0.57 reaches 4.56:1 on white, keeping the hue.

    Compare both in the Contrast System

  • For text on black

    #FFF5EE 19.54:1

    It already reaches 19.54:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #FFF5EE 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 #FFF5EE

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #FFF5EE sits at step 50.

  1. 50This color#FFF5EE
    White
    1.07
    Black
    19.54
  2. 100#F2E9E4
    White
    1.19
    Black
    17.55
  3. 200#DED6D0
    White
    1.43
    Black
    14.63
  4. 300#C5BCB6
    White
    1.86
    Black
    11.24
  5. 400#A9A099
    White
    2.56
    Black
    8.17
  6. 500#8D847E
    White
    3.66
    Black
    5.73
  7. 600#756D67
    White
    5.07
    Black
    4.13
  8. 700#5E5651
    White
    7.17
    Black
    2.92
  9. 800#453E39
    White
    10.49
    Black
    2.00
  10. 900#2E2723
    White
    14.67
    Black
    1.43
  11. 950#1A1511
    White
    18.11
    Black
    1.15

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

Gamut

How vivid #FFF5EE can get

A gray has no hue, so no gamut holds a more vivid version of #FFF5EE: 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
0.014
sRGB edge
No hue
Display P3 edge
No hue
Rec. 2020 edge
No hue
Dominant wavelength
583 nm
Excitation purity
5%
Chromaticity
x 0.3235, y 0.3359

Mixing

Mixing #FFF5EE

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%#FFFAF7
  • OKLab50%#FFFAF6
  • OKLCH50%#FFFAF7

Black #000000

  • sRGB50%#807B77
  • OKLab50%#635F5C
  • OKLCH50%#635F5C
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #fff5ee, white);
color: color-mix(in oklch, #fff5ee 50%, white);

In use

#FFF5EE 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, 4.5:119.54:1 Passes
  • Link and body-size textText, 4.5:11.07:1 Fails
  • Large headingLarge text, 3:11.07:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.07:1 Fails

For text on this page, the nearest shade that passes is #7D746E 4.56:1

Dark page

  • Button labelText, 4.5:119.54:1 Passes
  • Link and body-size textText, 4.5:117.43:1 Passes
  • Large headingLarge text, 3:117.43:1 Passes
  • Icons, borders and focus ringsNon-text, 3:117.43:1 Passes

Color vision

How #FFF5EE looks with color blindness

As a neutral it barely changes under any simulation, ΔE2000 5.0 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

    #F8F5EE ΔE2000 3.4

    Close match

    Reads as off-white

  • Deuteranopia

    No working green (medium-wavelength) cones

    #FAF8EE ΔE2000 4.6

    Close match

    Reads as off-white

  • Tritanopia

    No working blue (short-wavelength) cones

    #FFF3F3 ΔE2000 3.9

    Close match

    Reads as off-white

  • Achromatopsia

    No cone color vision; lightness only

    #F7F7F7 ΔE2000 5.0

    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 #FFF5EE

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 #1A1511 · 16.86:1

    Body text, AAA

  • Step 700 #5E5651 · 6.68:1

    Body text, AA

  • Step 300 #C5BCB6 · 1.73:1

    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-seashell: #fff5ee;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        seashell: '#fff5ee',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-seashell: oklch(0.976 0.014 57.6);
}

Design token (W3C DTCG)

{
  "color": {
    "seashell": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [1, 0.9608, 0.9333],
        "hex": "#fff5ee"
      },
      "$description": "CSS named color seashell"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let seashell = Color(.sRGB, red: 1.000, green: 0.961, blue: 0.933, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Seashell = Color(0xFFFFF5EE)
}

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 #FFF5EE in the tools

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