RAL Classic color

RAL 3013 Tomato red #A12312

RAL 3013 Tomato red is shown here as #A12312, a widely published sRGB approximation of the printed swatch. It is a dark soft red in the red family. In OKLCH it sits at lightness 0.464, chroma 0.164 and hue 31.1°. The nearest CSS named color is firebrick (#B22222), ΔE2000 4.9 away.

Relative luminance: 0.0882
OKLCH L · C · h: 0.464 · 0.164 · 31.1
Best text: White 7.59:1
Hue family: Red

Inspect this color Check contrast

#A12312 color codes

HEX: #A12312
RGB: rgb(161, 35, 18)
HSL: hsl(7, 80%, 35%)
OKLCH: oklch(0.464 0.164 31.1)
OKLab: oklab(0.464 0.141 0.085)
CIELAB (D65): L* 35.65, a* 50.03, b* 41.48
XYZ (D65): X 15.41, Y 8.83, Z 1.46
CMYK (naive): cmyk(0%, 78%, 89%, 37%)

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 #A12312 accessible?

White text on it reaches 7.59:1, passing AAA. Black text fails at 2.76:1.

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

2.76:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc +19
White text on it

7.59:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −89
As text on black

2.76:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc −17
As text on white

7.59:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +84

Nearest versions that pass 4.5:1

For text on white

#A12312 7.59:1

It already reaches 7.59:1 on white, so no change is needed.
For text on black

#C94B38 4.54:1

Lightening its OKLCH lightness from 0.46 to 0.58 reaches 4.54:1 on black, keeping the hue.

Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #A12312 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 #A12312

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #A12312 sits at step 700.

50#FFF2EF

White
1.09
Black
19.19
100#FFE4DF

White
1.20
Black
17.41
200#FFC9BE

White
1.46
Black
14.35
300#FFA190

White
1.95
Black
10.75
400#F57560

White
2.76
Black
7.59
500#D75844

White
3.91
Black
5.36
600#BB3E2C

White
5.47
Black
3.83
700This color#A12312

White
7.59
Black
2.76
800#7A0B00

White
11.19
Black
1.87
900#520500

White
15.21
Black
1.38
950#310100

White
18.50
Black
1.13

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

Gamut

How vivid #A12312 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.181; #A12312 uses 91% of it. Display P3, which many recent phones and laptops show, reaches 0.202 there: 12% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.164
sRGB edge: 0.181
Display P3 edge: 0.202
Rec. 2020 edge: 0.201
Dominant wavelength: 607 nm
Excitation purity: 84%
Chromaticity: x 0.5996, y 0.3434

This color#A12312
Most vivid in sRGB#A71400
Most vivid in Display P3oklch(0.464 0.202 31.1)

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

Use the wider color where screens show it

.accent {
  color: #a12312;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.6253 0.0844 0); }
}

Mixing

Mixing #A12312

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%#D09189
OKLab50%#D79589
OKLCH50%#D79589

Black #000000

sRGB50%#511209
OKLab50%#3C0702
OKLCH50%#3C0702

Its complement #006573

sRGB50%#514443
OKLab50%#6F514B
OKLCH50%#664692

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #a12312, white);
color: color-mix(in oklch, #a12312 50%, white);

In use

#A12312 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, 4.5:17.59:1 Passes
Link and body-size textText, 4.5:17.59:1 Passes
Large headingLarge text, 3:17.59:1 Passes
Icons, borders and focus ringsNon-text, 3:17.59:1 Passes

Dark page

Button labelText, 4.5:17.59:1 Passes
Link and body-size textText, 4.5:12.46:1 Fails
Large headingLarge text, 3:12.46:1 Fails
Icons, borders and focus ringsNon-text, 3:12.46:1 Fails

For text on this page, the nearest shade that passes is #D35441 4.56:1

Color vision

How #A12312 looks with color blindness

Deuteranopia changes it most, ΔE2000 34.6; tritanopia changes it least, 6.5.

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

#4B420D ΔE2000 32.0

Distinct

Reads as dark muted brown
Deuteranopia

No working green (medium-wavelength) cones

#6A5E08 ΔE2000 34.6

Distinct

Reads as dark muted yellow
Tritanopia

No working blue (short-wavelength) cones

#B20021 ΔE2000 6.5

Noticeable

Reads as vivid red
Achromatopsia

No cone color vision; lightness only

#545454 ΔE2000 26.6

Distinct

Reads as dark gray

Pairing check

Checked against its complement, #006573. Their lightness contrast is only 1.12:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#A12312 · #006573	45.6	Stays distinct
Protanopia	#4B420D · #5A6174	31.7	Stays distinct
Deuteranopia	#6A5E08 · #4C5773	38.0	Stays distinct
Tritanopia	#B20021 · #006B69	53.5	Stays distinct
Achromatopsia	#545454 · #5B5B5B	2.5	Easily confused

Harmony

Color harmonies for #A12312

Its complement is #006573, a dark 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#A12312
Complement#006573

Complementary

Open in Harmony Studio

−30°#9C1F54
Base#A12312
+30°#834800

Analogous

Open in Harmony Studio

Base#A12312
+120°#006C32
+240°#3A4CB3

Triadic

Open in Harmony Studio

Base#A12312
+150°#00685C
+210°#005F90

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-3013: #a12312;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'ral-3013': '#a12312',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-ral-3013: oklch(0.464 0.164 31.1);
}

Design token (W3C DTCG)

{
  "color": {
    "ral-3013": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.6314, 0.1373, 0.0706],
        "hex": "#a12312"
      },
      "$description": "RAL 3013 Tomato red (approximate sRGB)"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let ral3013 = Color(.sRGB, red: 0.631, green: 0.137, blue: 0.071, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Ral3013 = Color(0xFFA12312)
}

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 #A12312 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 3013 Tomato red #A12312

#A12312 color codes

Contrast: is #A12312 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 #A12312 live

Shades and tints of #A12312

How vivid #A12312 can get

Mixing #A12312

#A12312 in an interface

How #A12312 looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #A12312

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 #A12312 in the tools