CSS named color

Brown #A52A2A

The CSS keyword brown is #A52A2A. It is a soft red in the red family. In OKLCH it sits at lightness 0.481, chroma 0.160 and hue 25.6°.

Relative luminance: 0.0982
OKLCH L · C · h: 0.481 · 0.160 · 25.6
Best text: White 7.08:1
Hue family: Red

Inspect this color Check contrast

#A52A2A color codes

HEX: #A52A2A
RGB: rgb(165, 42, 42)
HSL: hsl(0, 59%, 41%)
OKLCH: oklch(0.481 0.160 25.6)
OKLab: oklab(0.481 0.144 0.069)
CIELAB (D65): L* 37.53, a* 49.69, b* 30.54
XYZ (D65): X 16.76, Y 9.83, Z 3.20
CMYK (naive): cmyk(0%, 75%, 75%, 35%)

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 #A52A2A accessible?

White text on it reaches 7.08:1, passing AAA. Black text fails at 2.96:1.

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

2.96:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc +20
White text on it

7.08:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −88
As text on black

2.96:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc −18
As text on white

7.08:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +83

Nearest versions that pass 4.5:1

For text on white

#A52A2A 7.08:1

It already reaches 7.08:1 on white, so no change is needed.
For text on black

#C74B46 4.52:1

Lightening its OKLCH lightness from 0.48 to 0.58 reaches 4.52:1 on black, keeping the hue.

Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #A52A2A 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 #A52A2A

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #A52A2A sits at step 700.

50#FFF2F0

White
1.09
Black
19.21
100#FFE4E1
White
1.20
Black
17.43
200#FFC8C2

White
1.46
Black
14.29
300#FFA098

White
1.95
Black
10.73
400#F4756D

White
2.75
Black
7.61
500#D55852

White
3.92
Black
5.34
600#B93F3B

White
5.47
Black
3.83
700This color#A52A2A

White
7.08
Black
2.96
800#7B0510

White
11.22
Black
1.87
900#540006

White
15.22
Black
1.37
950#320002

White
18.47
Black
1.13

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

Gamut

How vivid #A52A2A can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.195; #A52A2A uses 82% of it. Display P3, which many recent phones and laptops show, reaches 0.220 there: 13% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.160
sRGB edge: 0.195
Display P3 edge: 0.220
Rec. 2020 edge: 0.244
Dominant wavelength: 611 nm
Excitation purity: 70%
Chromaticity: x 0.5627, y 0.3298

This color#A52A2A
Most vivid in sRGB#B20018
Most vivid in Display P3oklch(0.481 0.220 25.6)

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

Use the wider color where screens show it

.accent {
  color: #a52a2a;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.6683 0 0.0856); }
}

Mixing

Mixing #A52A2A

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%#D29595
OKLab50%#D99891
OKLCH50%#D99891

Black #000000

sRGB50%#531515
OKLab50%#3D0A0A
OKLCH50%#3D0A0A

Its complement #006B74

sRGB50%#534B4F
OKLab50%#725652
OKLCH50%#5C6400

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #a52a2a, white);
color: color-mix(in oklch, #a52a2a 50%, white);

In use

#A52A2A 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, 4.5:17.08:1 Passes
Link and body-size textText, 4.5:17.08:1 Passes
Large headingLarge text, 3:17.08:1 Passes
Icons, borders and focus ringsNon-text, 3:17.08:1 Passes

Dark page

Button labelText, 4.5:17.08:1 Passes
Link and body-size textText, 4.5:12.64:1 Fails
Large headingLarge text, 3:12.64:1 Fails
Icons, borders and focus ringsNon-text, 3:12.64:1 Fails

For text on this page, the nearest shade that passes is #D2554F 4.59:1

Color vision

How #A52A2A looks with color blindness

Deuteranopia changes it most, ΔE2000 34.9; tritanopia changes it least, 4.6.

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

#4E4729 ΔE2000 30.8

Distinct

Reads as dark grayish brown
Deuteranopia

No working green (medium-wavelength) cones

#6D6226 ΔE2000 34.9

Distinct

Reads as muted brown
Tritanopia

No working blue (short-wavelength) cones

#B6002C ΔE2000 4.6

Close match

Reads as vivid red
Achromatopsia

No cone color vision; lightness only

#585858 ΔE2000 25.8

Distinct

Reads as dark gray

Pairing check

Checked against its complement, #006B74. Their lightness contrast is only 1.13:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#A52A2A · #006B74	47.3	Stays distinct
Protanopia	#4E4729 · #616675	25.0	Stays distinct
Deuteranopia	#6D6226 · #535C74	33.4	Stays distinct
Tritanopia	#B6002C · #00706E	54.9	Stays distinct
Achromatopsia	#585858 · #606060	2.9	Easily confused

Harmony

Color harmonies for #A52A2A

Its complement is #006B74, a muted teal, on the cool 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#A52A2A
Complement#006B74

Complementary

Open in Harmony Studio

−30°#9E2961
Base#A52A2A
+30°#8F4800

Analogous

Open in Harmony Studio

Base#A52A2A
+120°#00721F
+240°#3255B6

Triadic

Open in Harmony Studio

Base#A52A2A
+150°#006E5B
+210°#00668F

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-brown: #a52a2a;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        brown: '#a52a2a',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-brown: oklch(0.481 0.160 25.6);
}

Design token (W3C DTCG)

{
  "color": {
    "brown": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.6471, 0.1647, 0.1647],
        "hex": "#a52a2a"
      },
      "$description": "CSS named color brown"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let brown = Color(.sRGB, red: 0.647, green: 0.165, blue: 0.165, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Brown = Color(0xFFA52A2A)
}

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.

Tools

Open #A52A2A in the tools

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

Brown #A52A2A

#A52A2A color codes

Contrast: is #A52A2A accessible?

Black text on it

White text on it

As text on black

As text on white

Nearest versions that pass 4.5:1

Adjust #A52A2A live

Shades and tints of #A52A2A

How vivid #A52A2A can get

Mixing #A52A2A

#A52A2A in an interface

How #A52A2A looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #A52A2A

Complementary

Analogous

Triadic

Split-complementary

Design tokens

CSS custom property

Tailwind config

Tailwind v4 theme

Design token (W3C DTCG)

SwiftUI color

Jetpack Compose color

The nearest match in each system

Similar colors

Open #A52A2A in the tools