RAL Classic color

RAL 2001 Red orange #C93C20

RAL 2001 Red orange is shown here as #C93C20, a widely published sRGB approximation of the printed swatch. It is a vivid red in the red family. In OKLCH it sits at lightness 0.561, chroma 0.182 and hue 33.1°. The nearest CSS named color is firebrick (#B22222), ΔE2000 8.5 away.

Relative luminance
0.1575
OKLCH L · C · h
0.561 · 0.182 · 33.1
Best text
White 5.05:1
Hue family
Red
Inspect this color Check contrast

#C93C20 color codes

HEX
#C93C20
RGB
rgb(201, 60, 32)
HSL
hsl(10, 73%, 46%)
OKLCH
oklch(0.561 0.182 33.1)
OKLab
oklab(0.561 0.153 0.100)
CIELAB (D65)
L* 46.65, a* 54.37, b* 47.35
XYZ (D65)
X 25.97, Y 15.76, Z 3.04
CMYK (naive)
cmyk(0%, 70%, 84%, 21%)

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 #C93C20 accessible?

White text on it reaches 5.05:1, passing AA. Black text manages only 4.15:1, 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

    4.15:1

    • AA fails
    • AA large passes
    • AAA fails
    • APCA Lc +30

  • White text on it

    5.05:1

    • AA passes
    • AA large passes
    • AAA fails
    • APCA Lc −79

  • As text on black

    4.15:1

    • AA fails
    • AA large passes
    • AAA fails
    • APCA Lc −27

  • As text on white

    5.05:1

    • AA passes
    • AA large passes
    • AAA fails
    • APCA Lc +73

Nearest versions that pass 4.5:1

  • For text on white

    #C93C20 5.05:1

    It already reaches 5.05:1 on white, so no change is needed.

  • For text on black

    #D04327 4.51:1

    Lightening its OKLCH lightness from 0.56 to 0.58 reaches 4.51:1 on black, keeping the hue.

    Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #C93C20 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 #C93C20

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #C93C20 sits at step 600.

  1. 50#FFF2EF
    White
    1.09
    Black
    19.19
  2. 100#FFE4DE
    White
    1.20
    Black
    17.40
  3. 200#FFC9BD
    White
    1.46
    Black
    14.34
  4. 300#FFA28D
    White
    1.94
    Black
    10.80
  5. 400#FD6F53
    White
    2.77
    Black
    7.57
  6. 500#DE5034
    White
    3.96
    Black
    5.30
  7. 600This color#C93C20
    White
    5.05
    Black
    4.15
  8. 700#A11E00
    White
    7.77
    Black
    2.70
  9. 800#771400
    White
    11.14
    Black
    1.88
  10. 900#500900
    White
    15.21
    Black
    1.38
  11. 950#300300
    White
    18.44
    Black
    1.13

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

Gamut

How vivid #C93C20 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.207; #C93C20 uses 88% of it. Display P3, which many recent phones and laptops show, reaches 0.232 there: 12% more.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.182
sRGB edge
0.207
Display P3 edge
0.232
Rec. 2020 edge
0.231
Dominant wavelength
604 nm
Excitation purity
81%
Chromaticity
x 0.5801, y 0.3520
  • This color#C93C20
  • Most vivid in sRGB#D22B00
  • Most vivid in Display P3oklch(0.561 0.232 33.1)

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

Use the wider color where screens show it
.accent {
  color: #c93c20;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.7904 0.1721 0); }
}

Mixing

Mixing #C93C20

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%#E49E90
  • OKLab50%#ECA292
  • OKLCH50%#ECA292

Black #000000

  • sRGB50%#651E10
  • OKLab50%#4C1106
  • OKLCH50%#4C1106

Its complement #008397

  • sRGB50%#65605C
  • OKLab50%#8C6C65
  • OKLCH50%#865DB7
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #c93c20, white);
color: color-mix(in oklch, #c93c20 50%, white);

In use

#C93C20 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, 4.5:15.05:1 Passes
  • Link and body-size textText, 4.5:15.05:1 Passes
  • Large headingLarge text, 3:15.05:1 Passes
  • Icons, borders and focus ringsNon-text, 3:15.05:1 Passes

Dark page

  • Button labelText, 4.5:15.05:1 Passes
  • Link and body-size textText, 4.5:13.70:1 Fails
  • Large headingLarge text, 3:13.70:1 Passes
  • Icons, borders and focus ringsNon-text, 3:13.70:1 Passes

For text on this page, the nearest shade that passes is #DB4D31 4.56:1

Color vision

How #C93C20 looks with color blindness

Deuteranopia changes it most, ΔE2000 36.6; 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

    #665B1B ΔE2000 34.4

    Distinct

    Reads as dark muted brown

  • Deuteranopia

    No working green (medium-wavelength) cones

    #897A18 ΔE2000 36.6

    Distinct

    Reads as soft amber

  • Tritanopia

    No working blue (short-wavelength) cones

    #DE0037 ΔE2000 10.6

    Distinct

    Reads as vivid red

  • Achromatopsia

    No cone color vision; lightness only

    #6F6F6F ΔE2000 27.6

    Distinct

    Reads as gray

Pairing check

Checked against its complement, #008397. Their lightness contrast is only 1.13:1, so where hue collapses, add a label, icon or pattern.

VisionThe pairΔE2000Verdict
Normal vision#C93C20 · #00839748.6Stays distinct
Protanopia#665B1B · #747E9836.7Stays distinct
Deuteranopia#897A18 · #63729742.3Stays distinct
Tritanopia#DE0037 · #008B8959.8Stays distinct
Achromatopsia#6F6F6F · #7777773.2Easily confused

Harmony

Color harmonies for #C93C20

Its complement is #008397, a muted 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#C93C20
  • Complement#008397

Complementary

Open in Harmony Studio
  • −30°#C5366A
  • Base#C93C20
  • +30°#A86100

Analogous

Open in Harmony Studio
  • Base#C93C20
  • +120°#008C49
  • +240°#5565DD

Triadic

Open in Harmony Studio
  • Base#C93C20
  • +150°#00877A
  • +210°#007BBD

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-2001: #c93c20;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'ral-2001': '#c93c20',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-ral-2001: oklch(0.561 0.182 33.1);
}

Design token (W3C DTCG)

{
  "color": {
    "ral-2001": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.7882, 0.2353, 0.1255],
        "hex": "#c93c20"
      },
      "$description": "RAL 2001 Red orange (approximate sRGB)"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let ral2001 = Color(.sRGB, red: 0.788, green: 0.235, blue: 0.125, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Ral2001 = Color(0xFFC93C20)
}

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 #C93C20 in the tools

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