#181D44#181D44

#181D44 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.073 H 274.4°. Best body text is #FFFFFF at 16.18:1 contrast (WCAG AA passes).

Color values

HEX	#181D44
RGB	rgb(24, 29, 68)
HSL	hsl(233, 48%, 18%)
HSV	hsv(233, 65%, 27%)
CMYK	cmyk(64.7%, 57.4%, 0%, 73.3%)
CIE-LAB	lab(12.54, 11.68, -25.41)
CIE-LCH	lch(12.54, 27.97, 294.68°)
OKLab	oklab(25.06% 0.0056 -0.0727)
OKLCH	oklch(25.06% 0.073 274.4)
XYZ	xyz(1.8591, 1.4901, 5.6574)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D44 #443F18

analogous

#183344 #181D44 #291844

triadic

#181D44 #44181D #1D4418

tetradic

#181D44 #441833 #443F18 #184429

square

#181D44 #441833 #443F18 #184429

split-complementary

#181D44 #442918 #334418

monochromatic

#080A17 #080A17 #181D44 #283071 #38449E

Accessibility & contrast

On white

16.18

#181D44 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181D44 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D44

16.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D44	#FFFFFF	#000000	##FFFFFF
##181D44	1.00	16.18	1.30	16.18
#FFFFFF	16.18	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#082345

Deuteranopia (green-blind)

#021F43

Tritanopia (blue-blind)

#01262D

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181d44;
/* rgb */ color: rgb(24, 29, 68);
/* oklch */ color: oklch(25.1% 0.073 274.4);

Tailwind

colors: {
  custom: {
    50: '#5a5878',
    500: '#181d44',
    950: '#000000',
  },
}

SCSS

$custom: #181d44;
$custom-light: #5a5878;
$custom-dark: #000000;

JSON

{
  "hex": "#181d44",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 68
  },
  "hsl": {
    "h": 233.182,
    "s": 47.826,
    "l": 18.039
  },
  "oklch": {
    "l": 0.25057,
    "c": 0.07289,
    "h": 274.4
  },
  "luminance": 0.0149
}

Semantic roles & 50–950 ramp

primary

#181D44

secondary

#7B743D

accent

#C850D7

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #181D44

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

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