#183A49#183A49

#183A49 is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.0% C 0.047 H 229.4°. Best body text is #FFFFFF at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#183A49
RGB	rgb(24, 58, 73)
HSL	hsl(198, 51%, 19%)
HSV	hsv(198, 67%, 29%)
CMYK	cmyk(67.1%, 20.5%, 0%, 71.4%)
CIE-LAB	lab(22.66, -7.01, -12.91)
CIE-LCH	lch(22.66, 14.69, 241.48°)
OKLab	oklab(33.03% -0.0308 -0.036)
OKLCH	oklch(33.03% 0.047 229.4)
XYZ	xyz(3.0919, 3.7010, 6.8535)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A49 #492718

analogous

#184940 #183A49 #182249

triadic

#183A49 #49183A #3A4918

tetradic

#183A49 #401849 #492718 #224918

square

#183A49 #401849 #492718 #224918

split-complementary

#183A49 #491822 #494018

monochromatic

#081217 #09151B #183A49 #275F77 #3683A5

Accessibility & contrast

On white

12.07

#183A49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#183A49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A49

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A49	#FFFFFF	#000000	##FFFFFF
##183A49	1.00	12.07	1.74	12.07
#FFFFFF	12.07	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32394A

Deuteranopia (green-blind)

#2B3449

Tritanopia (blue-blind)

#003E3F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183a49;
/* rgb */ color: rgb(24, 58, 73);
/* oklch */ color: oklch(33.0% 0.047 229.4);

Tailwind

colors: {
  custom: {
    50: '#5b707b',
    500: '#183a49',
    950: '#000000',
  },
}

SCSS

$custom: #183a49;
$custom-light: #5b707b;
$custom-dark: #000000;

JSON

{
  "hex": "#183a49",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 73
  },
  "hsl": {
    "h": 198.367,
    "s": 50.515,
    "l": 19.02
  },
  "oklch": {
    "l": 0.33032,
    "c": 0.04742,
    "h": 229.4
  },
  "luminance": 0.03701
}

Semantic roles & 50–950 ramp

primary

#183A49

secondary

#80513D

accent

#794EDA

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #183A49

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

Preview Lab → · Contrast checker → · Palette generator →