RAL Classic color

RAL 5003 Saphire blue #1D1E33

RAL 5003 Saphire blue is shown here as #1D1E33, a widely published sRGB approximation of the printed swatch. It is a very dark grayish blue in the blue family. In OKLCH it sits at lightness 0.245, chroma 0.040 and hue 280.9°. The nearest CSS named color is black (#000000), ΔE2000 14.1 away.

Relative luminance
0.0143
OKLCH L · C · h
0.245 · 0.040 · 280.9
Best text
White 16.33:1
Hue family
Blue
Inspect this color Check contrast

#1D1E33 color codes

HEX
#1D1E33
RGB
rgb(29, 30, 51)
HSL
hsl(237, 28%, 16%)
OKLCH
oklch(0.245 0.040 280.9)
OKLab
oklab(0.245 0.008 -0.039)
CIELAB (D65)
L* 12.15, a* 5.97, b* -13.98
XYZ (D65)
X 1.57, Y 1.43, Z 3.32
CMYK (naive)
cmyk(43%, 41%, 0%, 80%)

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 #1D1E33 accessible?

White text on it reaches 16.33:1, passing AAA. Black text fails at 1.28:1.

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

    1.28:1

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

    Text is here, unreadable at 1.28:1

  • White text on it

    16.33:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −105

  • As text on black

    1.28:1

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

    Text is here, unreadable at 1.28:1

  • As text on white

    16.33:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +103

Nearest versions that pass 4.5:1

  • For text on white

    #1D1E33 16.33:1

    It already reaches 16.33:1 on white, so no change is needed.

  • For text on black

    #71748D 4.58:1

    Lightening its OKLCH lightness from 0.24 to 0.56 reaches 4.58:1 on black, keeping the hue.

    Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #1D1E33 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 #1D1E33

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #1D1E33 sits at step 900.

  1. 50#F3F4FF
    White
    1.09
    Black
    19.19
  2. 100#E7E9FF
    White
    1.20
    Black
    17.49
  3. 200#D3D5EF
    White
    1.44
    Black
    14.53
  4. 300#B9BBD6
    White
    1.88
    Black
    11.14
  5. 400#9D9FBA
    White
    2.59
    Black
    8.10
  6. 500#81849E
    White
    3.66
    Black
    5.72
  7. 600#6A6C86
    White
    5.11
    Black
    4.10
  8. 700#54566E
    White
    7.15
    Black
    2.93
  9. 800#3C3E53
    White
    10.46
    Black
    2.00
  10. 900This color#1D1E33
    White
    16.33
    Black
    1.28
  11. 950#141423
    White
    18.19
    Black
    1.15

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

Gamut

How vivid #1D1E33 can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.148; #1D1E33 uses 27% of it. Display P3 reaches no further at this hue.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.040
sRGB edge
0.148
Display P3 edge
0.150
Rec. 2020 edge
0.161
Dominant wavelength
466 nm
Excitation purity
36%
Chromaticity
x 0.2481, y 0.2260
  • This color#1D1E33
  • Most vivid in sRGB#1D0063
  • Most vivid in Display P3oklch(0.245 0.150 280.9)

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

Use the wider color where screens show it
.accent {
  color: #1d1e33;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.0998 0 0.3745); }
}

Mixing

Mixing #1D1E33

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%#8E8F99
  • OKLab50%#848693
  • OKLCH50%#848693

Black #000000

  • sRGB50%#0F0F1A
  • OKLab50%#05050D
  • OKLCH50%#05050D

Its complement #252108

  • sRGB50%#21201E
  • OKLab50%#212020
  • OKLCH50%#31181C
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #1d1e33, white);
color: color-mix(in oklch, #1d1e33 50%, white);

In use

#1D1E33 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, 4.5:116.33:1 Passes
  • Link and body-size textText, 4.5:116.33:1 Passes
  • Large headingLarge text, 3:116.33:1 Passes
  • Icons, borders and focus ringsNon-text, 3:116.33:1 Passes

Dark page

  • Button labelText, 4.5:116.33:1 Passes
  • Link and body-size textText, 4.5:11.14:1 Fails
  • Large headingLarge text, 3:11.14:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.14:1 Fails

For text on this page, the nearest shade that passes is #787B95 4.51:1

Color vision

How #1D1E33 looks with color blindness

Tritanopia changes it most, ΔE2000 13.2; deuteranopia changes it least, 4.2.

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

    #172134 ΔE2000 4.7

    Close match

    Reads as very dark grayish blue

  • Deuteranopia

    No working green (medium-wavelength) cones

    #161F32 ΔE2000 4.2

    Close match

    Reads as very dark grayish blue

  • Tritanopia

    No working blue (short-wavelength) cones

    #172226 ΔE2000 13.2

    Distinct

    Reads as near-black

  • Achromatopsia

    No cone color vision; lightness only

    #202020 ΔE2000 12.1

    Distinct

    Reads as near-black

Pairing check

Checked against its complement, #252108. Their lightness contrast is only 1.01:1, so where hue collapses, add a label, icon or pattern.

VisionThe pairΔE2000Verdict
Normal vision#1D1E33 · #25210825.7Stays distinct
Protanopia#172134 · #25200623.8Stays distinct
Deuteranopia#161F32 · #26210923.6Stays distinct
Tritanopia#172226 · #281E1C13.4Stays distinct
Achromatopsia#202020 · #2121210.3Easily confused

Harmony

Color harmonies for #1D1E33

Its complement is #252108, a very dark grayish yellow.

Hue rotations in OKLCH, mapped into sRGB by trimming chroma so hue and lightness stay put.

Open the Harmony Studio
  • Base#1D1E33
  • Complement#252108

Complementary

Open in Harmony Studio
  • −30°#112233
  • Base#1D1E33
  • +30°#261B2E

Analogous

Open in Harmony Studio
  • Base#1D1E33
  • +120°#301A11
  • +240°#0C261A

Triadic

Open in Harmony Studio
  • Base#1D1E33
  • +150°#2C1D09
  • +210°#1A240F

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-5003: #1d1e33;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'ral-5003': '#1d1e33',
      },
    },
  },
};

Tailwind v4 theme

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

@theme {
  --color-ral-5003: oklch(0.245 0.040 280.9);
}

Design token (W3C DTCG)

{
  "color": {
    "ral-5003": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.1137, 0.1176, 0.2],
        "hex": "#1d1e33"
      },
      "$description": "RAL 5003 Saphire blue (approximate sRGB)"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let ral5003 = Color(.sRGB, red: 0.114, green: 0.118, blue: 0.200, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Ral5003 = Color(0xFF1D1E33)
}

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 #1D1E33 in the tools

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