RAL Classic color

RAL 8019 Grey brown #403A3A

RAL 8019 Grey brown is shown here as #403A3A, a widely published sRGB approximation of the printed swatch. It is a dark gray in the neutral family. In OKLCH it sits at lightness 0.355 with chroma 0.008, too low for hue to matter. The nearest CSS named color is dimgray (#696969), ΔE2000 16.3 away.

Relative luminance
0.0442
OKLCH L · C · h
0.355 · 0.008 · 17.6
Best text
White 11.14:1
Hue family
Neutral
Inspect this color Check contrast

#403A3A color codes

HEX
#403A3A
RGB
rgb(64, 58, 58)
HSL
hsl(0, 5%, 24%)
OKLCH
oklch(0.355 0.008 17.6)
OKLab
oklab(0.355 0.008 0.003)
CIELAB (D65)
L* 25.02, a* 2.60, b* 0.94
XYZ (D65)
X 4.39, Y 4.42, Z 4.62
CMYK (naive)
cmyk(0%, 9%, 9%, 75%)

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.

RAL and RAL Classic are trademarks of RAL gGmbH, which this site is not affiliated with. The sRGB value is an approximation of the printed swatch; check a physical RAL color card before you specify a paint.

Legibility

Contrast: is #403A3A accessible?

White text on it reaches 11.14:1, passing AAA. Black text fails at 1.88:1.

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

    1.88:1

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

  • White text on it

    11.14:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −99

  • As text on black

    1.88:1

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

  • As text on white

    11.14:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +95

Nearest versions that pass 4.5:1

  • For text on white

    #403A3A 11.14:1

    It already reaches 11.14:1 on white, so no change is needed.

  • For text on black

    #7B7474 4.59:1

    Lightening its OKLCH lightness from 0.35 to 0.56 reaches 4.59:1 on black, keeping the hue.

    Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #403A3A 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 #403A3A

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #403A3A sits at step 800.

  1. 50#FAF3F3
    White
    1.09
    Black
    19.17
  2. 100#F0E9E9
    White
    1.19
    Black
    17.53
  3. 200#DCD6D6
    White
    1.43
    Black
    14.63
  4. 300#C3BCBC
    White
    1.86
    Black
    11.23
  5. 400#A79F9F
    White
    2.59
    Black
    8.10
  6. 500#8B8484
    White
    3.66
    Black
    5.73
  7. 600#736D6D
    White
    5.07
    Black
    4.13
  8. 700#5C5656
    White
    7.19
    Black
    2.92
  9. 800This color#403A3A
    White
    11.14
    Black
    1.88
  10. 900#2C2828
    White
    14.57
    Black
    1.44
  11. 950#191515
    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 #403A3A can get

A gray has no hue, so no gamut holds a more vivid version of #403A3A: 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
0.008
sRGB edge
No hue
Display P3 edge
No hue
Rec. 2020 edge
No hue
Dominant wavelength
611 nm
Excitation purity
4%
Chromaticity
x 0.3268, y 0.3291

Mixing

Mixing #403A3A

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%#A09D9D
  • OKLab50%#9A9696
  • OKLCH50%#9A9696

Black #000000

  • sRGB50%#201D1D
  • OKLab50%#131010
  • OKLCH50%#131010
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #403a3a, white);
color: color-mix(in oklch, #403a3a 50%, white);

In use

#403A3A 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, 4.5:111.14:1 Passes
  • Link and body-size textText, 4.5:111.14:1 Passes
  • Large headingLarge text, 3:111.14:1 Passes
  • Icons, borders and focus ringsNon-text, 3:111.14:1 Passes

Dark page

  • Button labelText, 4.5:111.14:1 Passes
  • Link and body-size textText, 4.5:11.68:1 Fails
  • Large headingLarge text, 3:11.68:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.68:1 Fails

For text on this page, the nearest shade that passes is #827B7B 4.52:1

Color vision

How #403A3A looks with color blindness

As a neutral it barely changes under any simulation, ΔE2000 4.4 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

    #3B3B3A ΔE2000 4.0

    Close match

    Reads as dark gray

  • Deuteranopia

    No working green (medium-wavelength) cones

    #3C3C3A ΔE2000 4.4

    Close match

    Reads as dark gray

  • Tritanopia

    No working blue (short-wavelength) cones

    #41393A ΔE2000 1.4

    Very close

    Reads as dark gray

  • Achromatopsia

    No cone color vision; lightness only

    #3B3B3B ΔE2000 3.7

    Close match

    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 #403A3A

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 50 #FAF3F3 · 10.17:1

    Body text, AAA

  • Step 300 #C3BCBC · 5.96:1

    Body text, AA

  • Step 700 #5C5656 · 1.54:1

    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-ral-8019: #403a3a;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'ral-8019': '#403a3a',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-ral-8019: oklch(0.355 0.008 17.6);
}

Design token (W3C DTCG)

{
  "color": {
    "ral-8019": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.251, 0.2275, 0.2275],
        "hex": "#403a3a"
      },
      "$description": "RAL 8019 Grey brown (approximate sRGB)"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let ral8019 = Color(.sRGB, red: 0.251, green: 0.227, blue: 0.227, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Ral8019 = Color(0xFF403A3A)
}

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 #403A3A in the tools

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