#181747#181747

#181747 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.0% C 0.087 H 278.5°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#181747
RGB	rgb(24, 23, 71)
HSL	hsl(241, 51%, 18%)
HSV	hsv(241, 68%, 28%)
CMYK	cmyk(66.2%, 67.6%, 0%, 72.2%)
CIE-LAB	lab(11.01, 17.37, -30.00)
CIE-LCH	lch(11.01, 34.66, 300.07°)
OKLab	oklab(23.99% 0.0129 -0.0862)
OKLCH	oklch(23.99% 0.087 278.5)
XYZ	xyz(1.8201, 1.2618, 6.1077)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181747 #464717

analogous

#172E47 #181747 #301747

triadic

#181747 #471817 #174718

tetradic

#181747 #47172E #464717 #174730

square

#181747 #47172E #464717 #174730

split-complementary

#181747 #473017 #2E4717

monochromatic

#080717 #080819 #181747 #282675 #3735A3

Accessibility & contrast

On white

16.77

#181747 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#181747 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181747

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181747	#FFFFFF	#000000	##FFFFFF
##181747	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F49

Deuteranopia (green-blind)

#001C46

Tritanopia (blue-blind)

#00232C

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #181747;
/* rgb */ color: rgb(24, 23, 71);
/* oklch */ color: oklch(24.0% 0.087 278.5);

Tailwind

colors: {
  custom: {
    50: '#5b547b',
    500: '#181747',
    950: '#000000',
  },
}

SCSS

$custom: #181747;
$custom-light: #5b547b;
$custom-dark: #000000;

JSON

{
  "hex": "#181747",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 71
  },
  "hsl": {
    "h": 241.25,
    "s": 51.064,
    "l": 18.431
  },
  "oklch": {
    "l": 0.2399,
    "c": 0.08718,
    "h": 278.5
  },
  "luminance": 0.01262
}

Semantic roles & 50–950 ramp

primary

#181747

secondary

#7D7E3C

accent

#DB4DD8

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040209

muted

#79787B

Preview Lab

Preview with #181747

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

Preview Lab → · Contrast checker → · Palette generator →