#1D237C#1D237C

#1D237C is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.147 H 271.7°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#1D237C
RGB	rgb(29, 35, 124)
HSL	hsl(236, 62%, 30%)
HSV	hsv(236, 77%, 49%)
CMYK	cmyk(76.6%, 71.8%, 0%, 51.4%)
CIE-LAB	lab(19.71, 30.17, -50.93)
CIE-LCH	lch(19.71, 59.19, 300.64°)
OKLab	oklab(32.03% 0.0044 -0.1473)
OKLCH	oklch(32.03% 0.147 271.7)
XYZ	xyz(4.7446, 2.9180, 19.3781)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D237C #7C761D

analogous

#1D527C #1D237C #471D7C

triadic

#1D237C #7C1D23 #237C1D

tetradic

#1D237C #7C1D52 #7C761D #1D7C47

square

#1D237C #7C1D52 #7C761D #1D7C47

split-complementary

#1D237C #7C471D #527C1D

monochromatic

#060719 #11154A #1D237C #2931AE #414AD3

Accessibility & contrast

On white

13.26

#1D237C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1D237C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D237C

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D237C	#FFFFFF	#000000	##FFFFFF
##1D237C	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347F

Deuteranopia (green-blind)

#002B7A

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1d237c;
/* rgb */ color: rgb(29, 35, 124);
/* oklch */ color: oklch(32.0% 0.147 271.7);

Tailwind

colors: {
  custom: {
    50: '#695ea3',
    500: '#1d237c',
    950: '#000000',
  },
}

SCSS

$custom: #1d237c;
$custom-light: #695ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d237c",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 124
  },
  "hsl": {
    "h": 236.211,
    "s": 62.092,
    "l": 30
  },
  "oklch": {
    "l": 0.3203,
    "c": 0.14739,
    "h": 271.7
  },
  "luminance": 0.02919
}

Semantic roles & 50–950 ramp

primary

#1D237C

secondary

#B0A945

accent

#DB43E5

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1D237C

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

Preview Lab → · Contrast checker → · Palette generator →