#181B49#181B49

#181B49 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.0% C 0.084 H 275.7°. Best body text is #FFFFFF at 16.26:1 contrast (WCAG AA passes).

Color values

HEX	#181B49
RGB	rgb(24, 27, 73)
HSL	hsl(236, 51%, 19%)
HSV	hsv(236, 67%, 29%)
CMYK	cmyk(67.1%, 63%, 0%, 71.4%)
CIE-LAB	lab(12.34, 15.19, -29.21)
CIE-LCH	lch(12.34, 32.93, 297.47°)
OKLab	oklab(25.04% 0.0083 -0.0839)
OKLCH	oklch(25.04% 0.084 275.7)
XYZ	xyz(1.9708, 1.4589, 6.4798)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B49 #494618

analogous

#183449 #181B49 #2E1849

triadic

#181B49 #49181B #1B4918

tetradic

#181B49 #491834 #494618 #18492E

square

#181B49 #491834 #494618 #18492E

split-complementary

#181B49 #492E18 #344918

monochromatic

#080917 #090A1B #181B49 #272C77 #363DA5

Accessibility & contrast

On white

16.26

#181B49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#181B49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B49

16.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B49	#FFFFFF	#000000	##FFFFFF
##181B49	1.00	16.26	1.29	16.26
#FFFFFF	16.26	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224B

Deuteranopia (green-blind)

#001E48

Tritanopia (blue-blind)

#00262E

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #181b49;
/* rgb */ color: rgb(24, 27, 73);
/* oklch */ color: oklch(25.0% 0.084 275.7);

Tailwind

colors: {
  custom: {
    50: '#5b577c',
    500: '#181b49',
    950: '#000000',
  },
}

SCSS

$custom: #181b49;
$custom-light: #5b577c;
$custom-dark: #000000;

JSON

{
  "hex": "#181b49",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 73
  },
  "hsl": {
    "h": 236.327,
    "s": 50.515,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25037,
    "c": 0.08429,
    "h": 275.7
  },
  "luminance": 0.01459
}

Semantic roles & 50–950 ramp

primary

#181B49

secondary

#807C3D

accent

#D14EDA

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #181B49

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

Preview Lab → · Contrast checker → · Palette generator →