RAL Classic color

RAL 2012 Salmon orange #E55137

RAL 2012 Salmon orange is shown here as #E55137, a widely published sRGB approximation of the printed swatch. It is a vivid red in the red family. In OKLCH it sits at lightness 0.632, chroma 0.188 and hue 32.3°. The nearest CSS named color is tomato (#FF6347), ΔE2000 6.6 away.

Relative luminance: 0.2282
OKLCH L · C · h: 0.632 · 0.188 · 32.3
Best text: Black 5.56:1
Hue family: Red

Inspect this color Check contrast

#E55137 color codes

HEX: #E55137
RGB: rgb(229, 81, 55)
HSL: hsl(9, 77%, 56%)
OKLCH: oklch(0.632 0.188 32.3)
OKLab: oklab(0.632 0.159 0.101)
CIELAB (D65): L* 54.89, a* 56.03, b* 45.59
XYZ (D65): X 35.95, Y 22.82, Z 6.13
CMYK (naive): cmyk(0%, 65%, 76%, 10%)

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 #E55137 accessible?

Black text on it reaches 5.56:1, passing AA. White text manages only 3.77:1, enough for large text only.

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

5.56:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc +39
White text on it

3.77:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc −69
As text on black

5.56:1
- AA passes
- AA large passes
- AAA fails
- APCA Lc −37
As text on white

3.77:1
- AA fails
- AA large passes
- AAA fails
- APCA Lc +64

Nearest versions that pass 4.5:1

For text on white

#D54128 4.54:1

Darkening its OKLCH lightness from 0.63 to 0.59 reaches 4.54:1 on white, keeping the hue.

Compare both in the Contrast System
For text on black

#E55137 5.56:1

It already reaches 5.56:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #E55137 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 #E55137

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #E55137 sits at step 500.

50#FFF2EF

White
1.09
Black
19.19
100#FFE4DF

White
1.20
Black
17.41
200#FFC9BD

White
1.46
Black
14.34
300#FFA18E

White
1.95
Black
10.74
400#FF6D52

White
2.77
Black
7.56
500This color#E55137

White
3.77
Black
5.56
600#C43117

White
5.52
Black
3.79
700#A31B00

White
7.73
Black
2.71
800#791100

White
11.09
Black
1.89
900#510800

White
15.16
Black
1.38
950#310200

White
18.43
Black
1.13

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

Gamut

How vivid #E55137 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.238; #E55137 uses 79% of it. Display P3, which many recent phones and laptops show, reaches 0.267 there: 12% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.188
sRGB edge: 0.238
Display P3 edge: 0.267
Rec. 2020 edge: 0.266
Dominant wavelength: 603 nm
Excitation purity: 74%
Chromaticity: x 0.5539, y 0.3517

This color#E55137
Most vivid in sRGB#F92F00
Most vivid in Display P3oklch(0.632 0.267 32.3)

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

Use the wider color where screens show it

.accent {
  color: #e55137;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.9345 0.1887 0); }
}

Mixing

Mixing #E55137

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%#F2A89B
OKLab50%#FAAD9C
OKLCH50%#FAAD9C

Black #000000

sRGB50%#73291C
OKLab50%#581A0F
OKLCH50%#581A0F

Its complement #009BB1

sRGB50%#737674
OKLab50%#A0827B
OKLCH50%#7B9711

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #e55137, white);
color: color-mix(in oklch, #e55137 50%, white);

In use

#E55137 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, 4.5:15.56:1 Passes
Link and body-size textText, 4.5:13.77:1 Fails
Large headingLarge text, 3:13.77:1 Passes
Icons, borders and focus ringsNon-text, 3:13.77:1 Passes

For text on this page, the nearest shade that passes is #D54128 4.54:1

Dark page

Button labelText, 4.5:15.56:1 Passes
Link and body-size textText, 4.5:14.96:1 Passes
Large headingLarge text, 3:14.96:1 Passes
Icons, borders and focus ringsNon-text, 3:14.96:1 Passes

Color vision

How #E55137 looks with color blindness

Deuteranopia changes it most, ΔE2000 37.5; tritanopia changes it least, 10.6.

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

#7B6F33 ΔE2000 35.1

Distinct

Reads as muted brown
Deuteranopia

No working green (medium-wavelength) cones

#A08F31 ΔE2000 37.5

Distinct

Reads as soft amber
Tritanopia

No working blue (short-wavelength) cones

#FC284C ΔE2000 10.6

Distinct

Reads as vivid red
Achromatopsia

No cone color vision; lightness only

#838383 ΔE2000 27.6

Distinct

Reads as gray

Pairing check

Checked against its complement, #009BB1. 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	#E55137 · #009BB1	50.7	Stays distinct
Protanopia	#7B6F33 · #8A95B2	37.1	Stays distinct
Deuteranopia	#A08F31 · #7687B1	43.3	Stays distinct
Tritanopia	#FC284C · #00A4A2	62.9	Stays distinct
Achromatopsia	#838383 · #8D8D8D	3.6	Easily confused

Harmony

Color harmonies for #E55137

Its complement is #009BB1, a soft cyan, 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#E55137
Complement#009BB1

Complementary

Open in Harmony Studio

−30°#E04B80
Base#E55137
+30°#C67200

Analogous

Open in Harmony Studio

Base#E55137
+120°#00A555
+240°#657CFA

Triadic

Open in Harmony Studio

Base#E55137
+150°#00A08F
+210°#0092DD

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-2012: #e55137;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'ral-2012': '#e55137',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-ral-2012: oklch(0.632 0.188 32.3);
}

Design token (W3C DTCG)

{
  "color": {
    "ral-2012": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.898, 0.3176, 0.2157],
        "hex": "#e55137"
      },
      "$description": "RAL 2012 Salmon orange (approximate sRGB)"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let ral2012 = Color(.sRGB, red: 0.898, green: 0.318, blue: 0.216, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Ral2012 = Color(0xFFE55137)
}

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 #E55137 in the tools

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

RAL 2012 Salmon orange #E55137

#E55137 color codes

Contrast: is #E55137 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 #E55137 live

Shades and tints of #E55137

How vivid #E55137 can get

Mixing #E55137

#E55137 in an interface

How #E55137 looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #E55137

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 #E55137 in the tools