#181E4D#181E4D

#181E4D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.1% C 0.086 H 273.4°. Best body text is #FFFFFF at 15.77:1 contrast (WCAG AA passes).

Color values

HEX	#181E4D
RGB	rgb(24, 30, 77)
HSL	hsl(233, 52%, 20%)
HSV	hsv(233, 69%, 30%)
CMYK	cmyk(68.8%, 61%, 0%, 69.8%)
CIE-LAB	lab(13.58, 14.56, -29.97)
CIE-LCH	lch(13.58, 33.32, 295.91°)
OKLab	oklab(26.07% 0.0051 -0.0861)
OKLCH	oklch(26.07% 0.086 273.4)
XYZ	xyz(2.1801, 1.6584, 7.2250)
Luminance	0.0166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.95

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E4D #4D4718

analogous

#18384D #181E4D #2D184D

triadic

#181E4D #4D181E #1E4D18

tetradic

#181E4D #4D1838 #4D4718 #184D2D

square

#181E4D #4D1838 #4D4718 #184D2D

split-complementary

#181E4D #4D2D18 #384D18

monochromatic

#070917 #090C1E #181E4D #27307C #3542AA

Accessibility & contrast

On white

15.77

#181E4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#181E4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E4D

15.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E4D	#FFFFFF	#000000	##FFFFFF
##181E4D	1.00	15.77	1.33	15.77
#FFFFFF	15.77	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00254F

Deuteranopia (green-blind)

#00204C

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181e4d;
/* rgb */ color: rgb(24, 30, 77);
/* oklch */ color: oklch(26.1% 0.086 273.4);

Tailwind

colors: {
  custom: {
    50: '#5c597f',
    500: '#181e4d',
    950: '#000000',
  },
}

SCSS

$custom: #181e4d;
$custom-light: #5c597f;
$custom-dark: #000000;

JSON

{
  "hex": "#181e4d",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 77
  },
  "hsl": {
    "h": 233.208,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.26067,
    "c": 0.08621,
    "h": 273.4
  },
  "luminance": 0.01659
}

Semantic roles & 50–950 ramp

primary

#181E4D

secondary

#847C3D

accent

#CC4CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181E4D

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

Preview Lab → · Contrast checker → · Palette generator →