#183B44#183B44

#183B44 is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.1% C 0.043 H 217.0°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#183B44
RGB	rgb(24, 59, 68)
HSL	hsl(192, 48%, 18%)
HSV	hsv(192, 65%, 27%)
CMYK	cmyk(64.7%, 13.2%, 0%, 73.3%)
CIE-LAB	lab(22.79, -9.47, -9.36)
CIE-LCH	lch(22.79, 13.32, 224.68°)
OKLab	oklab(33.07% -0.0344 -0.026)
OKLCH	oklch(33.07% 0.043 217)
XYZ	xyz(2.9836, 3.7392, 6.0322)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B44 #442118

analogous

#184437 #183B44 #182544

triadic

#183B44 #44183B #3B4418

tetradic

#183B44 #371844 #442118 #254418

square

#183B44 #371844 #442118 #254418

split-complementary

#183B44 #441825 #443718

monochromatic

#081417 #081417 #183B44 #286271 #38899E

Accessibility & contrast

On white

12.02

#183B44 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#183B44 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B44

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B44	#FFFFFF	#000000	##FFFFFF
##183B44	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353945

Deuteranopia (green-blind)

#2E3444

Tritanopia (blue-blind)

#003E3E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183b44;
/* rgb */ color: rgb(24, 59, 68);
/* oklch */ color: oklch(33.1% 0.043 217.0);

Tailwind

colors: {
  custom: {
    50: '#5a7177',
    500: '#183b44',
    950: '#000000',
  },
}

SCSS

$custom: #183b44;
$custom-light: #5a7177;
$custom-dark: #000000;

JSON

{
  "hex": "#183b44",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 68
  },
  "hsl": {
    "h": 192.273,
    "s": 47.826,
    "l": 18.039
  },
  "oklch": {
    "l": 0.33065,
    "c": 0.04313,
    "h": 217
  },
  "luminance": 0.03739
}

Semantic roles & 50–950 ramp

primary

#183B44

secondary

#7B4A3D

accent

#6C50D7

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183B44

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

Preview Lab → · Contrast checker → · Palette generator →