#1D337E#1D337E

#1D337E is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.130 H 267.0°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX	#1D337E
RGB	rgb(29, 51, 126)
HSL	hsl(226, 63%, 30%)
HSV	hsv(226, 77%, 49%)
CMYK	cmyk(77%, 59.5%, 0%, 50.6%)
CIE-LAB	lab(24.11, 19.97, -44.99)
CIE-LCH	lch(24.11, 49.23, 293.94°)
OKLab	oklab(35.33% -0.0068 -0.1298)
OKLCH	oklch(35.33% 0.13 267)
XYZ	xyz(5.4551, 4.1346, 20.2452)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D337E #7E681D

analogous

#1D637E #1D337E #371D7E

triadic

#1D337E #7E1D33 #337E1D

tetradic

#1D337E #7E1D63 #7E681D #1D7E37

square

#1D337E #7E1D63 #7E681D #1D7E37

split-complementary

#1D337E #7E371D #637E1D

monochromatic

#060B1B #121F4C #1D337E #2847B0 #4263D3

Accessibility & contrast

On white

11.49

#1D337E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1D337E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D337E

11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D337E	#FFFFFF	#000000	##FFFFFF
##1D337E	1.00	11.49	1.83	11.49
#FFFFFF	11.49	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E81

Deuteranopia (green-blind)

#00357D

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d337e;
/* rgb */ color: rgb(29, 51, 126);
/* oklch */ color: oklch(35.3% 0.130 267.0);

Tailwind

colors: {
  custom: {
    50: '#686aa4',
    500: '#1d337e',
    950: '#000000',
  },
}

SCSS

$custom: #1d337e;
$custom-light: #686aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d337e",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 126
  },
  "hsl": {
    "h": 226.392,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.35326,
    "c": 0.12999,
    "h": 267
  },
  "luminance": 0.04135
}

Semantic roles & 50–950 ramp

primary

#1D337E

secondary

#B19945

accent

#C142E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D337E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →