RAL Classic color

RAL 4001 Red lilac #6D3F5B

RAL 4001 Red lilac is shown here as #6D3F5B, a widely published sRGB approximation of the printed swatch. It is a dark muted magenta in the pink family. In OKLCH it sits at lightness 0.433, chroma 0.075 and hue 343.4°. The nearest CSS named color is purple (#800080), ΔE2000 15.0 away.

Relative luminance
0.0756
OKLCH L · C · h
0.433 · 0.075 · 343.4
Best text
White 8.35:1
Hue family
Pink
Inspect this color Check contrast

#6D3F5B color codes

HEX
#6D3F5B
RGB
rgb(109, 63, 91)
HSL
hsl(323, 27%, 34%)
OKLCH
oklch(0.433 0.075 343.4)
OKLab
oklab(0.433 0.072 -0.021)
CIELAB (D65)
L* 33.05, a* 24.39, b* -8.09
XYZ (D65)
X 9.97, Y 7.56, Z 10.83
CMYK (naive)
cmyk(0%, 42%, 17%, 57%)

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 #6D3F5B accessible?

White text on it reaches 8.35:1, passing AAA. Black text fails at 2.51:1.

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

    2.51:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc +15

  • White text on it

    8.35:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −93

  • As text on black

    2.51:1

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

  • As text on white

    8.35:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +88

Nearest versions that pass 4.5:1

  • For text on white

    #6D3F5B 8.35:1

    It already reaches 8.35:1 on white, so no change is needed.

  • For text on black

    #986683 4.56:1

    Lightening its OKLCH lightness from 0.43 to 0.57 reaches 4.56:1 on black, keeping the hue.

    Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #6D3F5B 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 #6D3F5B

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #6D3F5B sits at step 700.

  1. 50#FFF0F8
    White
    1.10
    Black
    19.07
  2. 100#FFE1F2
    White
    1.21
    Black
    17.30
  3. 200#F8C7E3
    White
    1.47
    Black
    14.26
  4. 300#DFACC9
    White
    1.92
    Black
    10.88
  5. 400#C38FAD
    White
    2.67
    Black
    7.85
  6. 500#A77492
    White
    3.77
    Black
    5.55
  7. 600#8D5D7A
    White
    5.27
    Black
    3.97
  8. 700This color#6D3F5B
    White
    8.35
    Black
    2.51
  9. 800#593049
    White
    10.80
    Black
    1.94
  10. 900#3E1B31
    White
    14.93
    Black
    1.40
  11. 950#27091C
    White
    18.38
    Black
    1.14

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

Gamut

How vivid #6D3F5B can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.185; #6D3F5B uses 40% of it. Display P3, which many recent phones and laptops show, reaches 0.207 there: 11% more.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.075
sRGB edge
0.185
Display P3 edge
0.207
Rec. 2020 edge
0.242
Dominant wavelength
Complementary 513 nm
Excitation purity
31%
Chromaticity
x 0.3516, y 0.2666
  • This color#6D3F5B
  • Most vivid in sRGB#8E006A
  • Most vivid in Display P3oklch(0.433 0.207 343.4)

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

Use the wider color where screens show it
.accent {
  color: #6d3f5b;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.5276 0 0.4125); }
}

Mixing

Mixing #6D3F5B

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%#B69FAD
  • OKLab50%#B59BA9
  • OKLCH50%#B59BA9

Black #000000

  • sRGB50%#37202E
  • OKLab50%#26121E
  • OKLCH50%#26121E

Its complement #215D45

  • sRGB50%#474E50
  • OKLab50%#505050
  • OKLCH50%#325279
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #6d3f5b, white);
color: color-mix(in oklch, #6d3f5b 50%, white);

In use

#6D3F5B 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, 4.5:18.35:1 Passes
  • Link and body-size textText, 4.5:18.35:1 Passes
  • Large headingLarge text, 3:18.35:1 Passes
  • Icons, borders and focus ringsNon-text, 3:18.35:1 Passes

Dark page

  • Button labelText, 4.5:18.35:1 Passes
  • Link and body-size textText, 4.5:12.24:1 Fails
  • Large headingLarge text, 3:12.24:1 Fails
  • Icons, borders and focus ringsNon-text, 3:12.24:1 Fails

For text on this page, the nearest shade that passes is #A06D8B 4.50:1

Color vision

How #6D3F5B looks with color blindness

Achromatopsia changes it most, ΔE2000 20.0; tritanopia changes it least, 7.4.

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

    #42495C ΔE2000 19.1

    Distinct

    Reads as dark grayish blue

  • Deuteranopia

    No working green (medium-wavelength) cones

    #4D505A ΔE2000 18.9

    Distinct

    Reads as dark gray

  • Tritanopia

    No working blue (short-wavelength) cones

    #723F49 ΔE2000 7.4

    Noticeable

    Reads as dark muted wine

  • Achromatopsia

    No cone color vision; lightness only

    #4E4E4E ΔE2000 20.0

    Distinct

    Reads as dark gray

Pairing check

Checked against its complement, #215D45. Their lightness contrast is only 1.08:1, so where hue collapses, add a label, icon or pattern.

VisionThe pairΔE2000Verdict
Normal vision#6D3F5B · #215D4537.9Stays distinct
Protanopia#42495C · #5B564420.4Stays distinct
Deuteranopia#4D505A · #53504711.1Stays distinct
Tritanopia#723F49 · #005D5644.1Stays distinct
Achromatopsia#4E4E4E · #5353531.7Easily confused

Harmony

Color harmonies for #6D3F5B

Its complement is #215D45, a dark muted green, 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#6D3F5B
  • Complement#215D45

Complementary

Open in Harmony Studio
  • −30°#5F446E
  • Base#6D3F5B
  • +30°#743E44

Analogous

Open in Harmony Studio
  • Base#6D3F5B
  • +120°#58521B
  • +240°#10596F

Triadic

Open in Harmony Studio
  • Base#6D3F5B
  • +150°#3F592D
  • +210°#005D5C

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-ral-4001: #6d3f5b;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'ral-4001': '#6d3f5b',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-ral-4001: oklch(0.433 0.075 343.4);
}

Design token (W3C DTCG)

{
  "color": {
    "ral-4001": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.4275, 0.2471, 0.3569],
        "hex": "#6d3f5b"
      },
      "$description": "RAL 4001 Red lilac (approximate sRGB)"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let ral4001 = Color(.sRGB, red: 0.427, green: 0.247, blue: 0.357, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Ral4001 = Color(0xFF6D3F5B)
}

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 #6D3F5B in the tools

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